1 2 3 4 5 <!DOCTYPE html> 6 <html lang="en"> 7 <head> 8 <title>ImageMagick: Magick++, C++ API for ImageMagick: Image Class</title> 9 <meta charset="utf-8" /> 10 <meta http-equiv="X-UA-Compatible" content="IE=edge" /> 11 <meta name="viewport" content="width=device-width, initial-scale=1" /> 12 <meta http-equiv="content-type" content="text/html; charset=utf-8"/> 13 <meta name="application-name" content="ImageMagick"/> 14 <meta name="description" content="ImageMagick is a software suite to create, edit, compose, or convert bitmap images. It can read and write images in a variety of formats (over 200) including PNG, JPEG, JPEG-2000, GIF, WebP, Postscript, PDF, and SVG. 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The 63 <a href="../Magick++/STL.html">STL interface</a> <b>must</b> be used to operate on 64 image sequences or images (e.g. of format GIF, TIFF, MIFF, Postscript, 65 & MNG) which are comprised of multiple image frames. Individual 66 frames of a multi-frame image may be requested by adding array-style 67 notation to the end of the file name (e.g. "animation.gif[3]" retrieves 68 the fourth frame of a GIF animation. Various image manipulation 69 operations may be applied to the image. Attributes may be set on the 70 image to influence the operation of the manipulation operations. The <a 71 href="../Magick++/Pixels.html"> Pixels</a> class provides low-level access to 72 image 73 pixels. As a convenience, including <tt><font color="#663366"><Magick++.h></font></tt> 74 is sufficient in order to use the complete Magick++ API. The Magick++ 75 API is enclosed within the <i>Magick</i> namespace so you must either 76 add the prefix "<tt> Magick::</tt> " to each class/enumeration name or 77 add 78 the statement "<tt> using namespace Magick;</tt>" after including the <tt>Magick++.h</tt> 79 header.</p> 80 <p>The preferred way to allocate Image objects is via automatic 81 allocation (on the stack). There is no concern that allocating Image 82 objects on the stack will excessively enlarge the stack since Magick++ 83 allocates all large data objects (such as the actual image data) from 84 the heap. Use of automatic allocation is preferred over explicit 85 allocation (via <i>new</i>) since it is much less error prone and 86 allows use of C++ scoping rules to avoid memory leaks. Use of automatic 87 allocation allows Magick++ objects to be assigned and copied just like 88 the C++ intrinsic data types (e.g. '<i>int</i> '), leading to clear and 89 easy to read code. Use of automatic allocation leads to naturally 90 exception-safe code since if an exception is thrown, the object is 91 automagically deallocated once the stack unwinds past the scope of the 92 allocation (not the case for objects allocated via <i>new</i> ). </p> 93 <p>Image is very easy to use. For example, here is a the source to a 94 program which reads an image, crops it, and writes it to a new file 95 (the 96 exception handling is optional but strongly recommended): </p> 97 <pre class="code"> 98 #include <Magick++.h> 99 #include <iostream> 100 using namespace std; 101 using namespace Magick; 102 int main(int argc,char **argv) 103 { 104 InitializeMagick(*argv); 105 106 // Construct the image object. Separating image construction from the 107 // the read operation ensures that a failure to read the image file 108 // doesn't render the image object useless. 109 Image image; 110 try { 111 // Read a file into image object 112 image.read( "girl.gif" ); 113 114 // Crop the image to specified size (width, height, xOffset, yOffset) 115 image.crop( Geometry(100,100, 100, 100) ); 116 117 // Write the image to a file 118 image.write( "x.gif" ); 119 } 120 catch( Exception &error_ ) 121 { 122 cout << "Caught exception: " << error_.what() << endl; 123 return 1; 124 } 125 return 0; 126 } 127 </pre> 128 The following is the source to a program which illustrates the use of 129 Magick++'s efficient reference-counted assignment and copy-constructor 130 operations which minimize use of memory and eliminate unnecessary copy 131 operations (allowing Image objects to be efficiently assigned, and 132 copied into containers). The program accomplishes the 133 following: 134 <ol> 135 <li> Read master image.</li> 136 <li> Assign master image to second image.</li> 137 <li> Resize second image to the size 640x480.</li> 138 <li> Assign master image to a third image.</li> 139 <li> Resize third image to the size 800x600.</li> 140 <li> Write the second image to a file.</li> 141 <li> Write the third image to a file.</li> 142 </ol> 143 <pre class="code"> 144 #include <Magick++.h> 145 #include <iostream> 146 using namespace std; 147 using namespace Magick; 148 int main(int argc,char **argv) 149 { 150 InitializeMagick(*argv); 151 152 Image master("horse.jpg"); 153 Image second = master; 154 second.resize("640x480"); 155 Image third = master; 156 third.resize("800x600"); 157 second.write("horse640x480.jpg"); 158 third.write("horse800x600.jpg"); 159 return 0; 160 } 161 </pre> 162 During the entire operation, a maximum of three images exist in memory 163 and the image data is never copied. 164 <p>The following is the source for another simple program which creates 165 a 100 by 100 pixel white image with a red pixel in the center and 166 writes it to a file: </p> 167 <pre class="code"> 168 #include <Magick++.h> 169 using namespace std; 170 using namespace Magick; 171 int main(int argc,char **argv) 172 { 173 InitializeMagick(*argv); 174 Image image( "100x100", "white" ); 175 image.pixelColor( 49, 49, "red" ); 176 image.write( "red_pixel.png" ); 177 return 0; 178 } 179 </pre> 180 If you wanted to change the color image to grayscale, you could add the 181 lines: 182 <pre class="code"> 183 image.quantizeColorSpace( GRAYColorspace ); 184 image.quantizeColors( 256 ); 185 image.quantize( ); 186 </pre> 187 </p> 188 <p>or, more simply: </p> 189 <pre class="code"> 190 image.type( GrayscaleType ); 191 </pre> 192 <p>prior to writing the image. </p> 193 </div> 194 <h2> <a name="BLOBs"></a> BLOBs</h2> 195 <div class="doc-section"> 196 While encoded images (e.g. JPEG) are most often written-to and 197 read-from a disk file, encoded images may also reside in memory. 198 Encoded 199 images in memory are known as BLOBs (Binary Large OBjects) and may be 200 represented using the <a href="../Magick++/Blob.html">Blob</a> class. The encoded 201 image may be initially placed in memory by reading it directly from a 202 file, reading the image from a database, memory-mapped from a disk 203 file, or could be written to memory by Magick++. Once the encoded image 204 has been placed within a Blob, it may be read into a Magick++ Image via 205 a <a href="Image++.html#constructor_blob">constructor</a> or <a href="Image++.html#read">read()</a> 206 . Likewise, a Magick++ image may be written to a Blob via <a 207 href="Image++.html#write"> write()</a> . 208 <p>An example of using Image to write to a Blob follows: <br> 209 </p> 210 <pre class="code"> 211 #include <Magick++.h> 212 using namespace std; 213 using namespace Magick; 214 int main(int argc,char **argv) 215 { 216 InitializeMagick(*argv); 217 218 // Read GIF file from disk 219 Image image( "giraffe.gif" ); 220 // Write to BLOB in JPEG format 221 Blob blob; 222 image.magick( "JPEG" ) // Set JPEG output format 223 image.write( &blob ); 224 225 [ Use BLOB data (in JPEG format) here ] 226 227 return 0; 228 } 229 </pre> 230 <p><br> 231 likewise, to read an image from a Blob, you could use one of the 232 following examples: </p> 233 <p>[ <font color="#000000">Entry condition for the following examples 234 is that <i>data</i> is pointer to encoded image data and <i>length</i> 235 represents the size of the data</font> ] </p> 236 <pre class="code"> 237 Blob blob( data, length ); 238 Image image( blob ); 239 </pre> 240 or 241 <pre class="code"> 242 Blob blob( data, length ); 243 Image image; 244 image.read( blob); 245 </pre> 246 some images do not contain their size or format so the size and format must be specified in advance: 247 <pre class="code"> 248 Blob blob( data, length ); 249 Image image; 250 image.size( "640x480") 251 image.magick( "RGBA" ); 252 image.read( blob); 253 </pre> 254 </div> 255 <h2> <a name="Constructors"></a> Constructors</h2> 256 <div class="doc-section"> 257 Image may be constructed in a number of ways. It may be constructed 258 from a file, a URL, or an encoded image (e.g. JPEG) contained in an 259 in-memory <a href="../Magick++/Blob.html"> BLOB</a> . The available Image 260 constructors are shown in the following table: <br> 261 <br> 262 263 <ul><table bgcolor="#ffffff" border="1" width="100%"> 264 <caption><b>Image Constructors</b></caption> <tbody> 265 <tr> 266 <td> 267 <center><b>Signature</b></center> 268 </td> 269 <td> 270 <center><b>Description</b></center> 271 </td> 272 </tr> 273 <tr> 274 <td><font size="-1">const std::string &imageSpec_</font></td> 275 <td><font size="-1">Construct Image by reading from file or URL 276 specified by <i>imageSpec_</i>. Use array notation (e.g. filename[9]) 277 to select a specific scene from a multi-frame image.</font></td> 278 </tr> 279 <tr> 280 <td><font size="-1">const Geometry &size_, const <a 281 href="../Magick++/Color.html"> Color</a> &color_</font></td> 282 <td><font size="-1">Construct a blank image canvas of specified 283 size and color</font></td> 284 </tr> 285 <tr> 286 <td><a name="constructor_blob"></a> <font size="-1">const <a 287 href="../Magick++/Blob.html">Blob</a> &blob_</font></td> 288 <td rowspan="5"><font size="-1">Construct Image by reading from 289 encoded image data contained in an in-memory <a href="../Magick++/Blob.html">BLOB</a> 290 . Depending on the constructor arguments, the Blob <a href="Image++.html#size">size</a> 291 , <a href="Image++.html#depth">depth</a> , <a href="Image++.html#magick">magick</a> (format) 292 may 293 also be specified. Some image formats require that size be specified. 294 The default ImageMagick uses for depth depends on the compiled-in 295 Quantum size (8 or 16). If ImageMagick's Quantum size does not 296 match that of the image, the depth may need to be specified. 297 ImageMagick can usually automagically detect the image's format. 298 When a format can't be automagically detected, the format (<a 299 href="Image++.html#magick">magick</a> ) must be specified.</font></td> 300 </tr> 301 <tr> 302 <td><font size="-1">const <a href="../Magick++/Blob.html">Blob</a> 303 &blob_, const <a href="../Magick++/Geometry.html">Geometry</a> &size_</font></td> 304 </tr> 305 <tr> 306 <td><font size="-1">const <a href="../Magick++/Blob.html">Blob</a> 307 &blob_, const <a href="../Magick++/Geometry.html">Geometry</a> &size, 308 size_t depth</font></td> 309 </tr> 310 <tr> 311 <td><font size="-1">const <a href="../Magick++/Blob.html">Blob</a> 312 &blob_, const <a href="../Magick++/Geometry.html">Geometry</a> &size, 313 size_t depth_, const string &magick_</font></td> 314 </tr> 315 <tr> 316 <td><font size="-1">const <a href="../Magick++/Blob.html">Blob</a> 317 &blob_, const <a href="../Magick++/Geometry.html">Geometry</a> &size, 318 const 319 string &magick_</font></td> 320 </tr> 321 <tr> 322 <td><font size="-1">const size_t width_, </font> <br> 323 <font size="-1">const size_t height_,</font> <br> 324 <font size="-1">std::string map_,</font> <br> 325 <font size="-1">const <a href="../Magick++/Enumerations.html#StorageType"> 326 StorageType</a> type_,</font> <br> 327 <font size="-1">const void *pixels_</font></td> 328 <td><font size="-1">Construct a new Image based on an array of 329 image pixels. The pixel data must be in scanline order top-to-bottom. 330 The data can be character, short int, integer, float, or double. Float 331 and double require the pixels to be normalized [0..1]. The other types 332 are [0..MaxRGB]. For example, to create a 640x480 image from 333 unsigned red-green-blue character data, use</font> 334 <p><font size="-1"> Image image( 640, 480, "RGB", 335 0, pixels );</font> </p> 336 <p><font size="-1">The parameters are as follows:</font> <br> 337 338 <table border="0" width="100%"> 339 <tbody> 340 <tr> 341 <td><font size="-1">width_</font></td> 342 <td><font size="-1">Width in pixels of the image.</font></td> 343 </tr> 344 <tr> 345 <td><font size="-1">height_</font></td> 346 <td><font size="-1">Height in pixels of the image.</font></td> 347 </tr> 348 <tr> 349 <td><font size="-1">map_</font></td> 350 <td><font size="-1">This character string can be any 351 combination or order of R = red, G = green, B = blue, A = alpha, C = 352 cyan, Y = yellow M = magenta, and K = black. The ordering reflects the 353 order of the pixels in the supplied pixel array.</font></td> 354 </tr> 355 <tr> 356 <td><font size="-1">type_</font></td> 357 <td><font size="-1"><a href="../Magick++/Enumerations.html#StorageType">Pixel 358 storage type</a> (CharPixel, ShortPixel, IntegerPixel, FloatPixel, or 359 DoublePixel)</font></td> 360 </tr> 361 <tr> 362 <td><font size="-1">pixels_</font></td> 363 <td><font size="-1">This array of values contain the pixel 364 components as defined by the map_ and type_ parameters. The length of 365 the arrays must equal the area specified by the width_ and height_ 366 values and type_ parameters.</font></td> 367 </tr> 368 </tbody> 369 </table> 370 </p> 371 </td> 372 </tr> 373 </tbody> 374 </table></ul> 375 </div> 376 <h2> <a name="Image Manipulation Methods"></a> Image Manipulation Methods</h2> 377 <div class="doc-section"> 378 <i>Image</i> supports access to all the single-image (versus 379 image-list) manipulation operations provided by the ImageMagick 380 library. If you 381 must process a multi-image file (such as an animation), the <a 382 href="../Magick++/STL.html"> STL interface</a> , which provides a multi-image 383 abstraction on top of <i>Image</i>, must be used. 384 <p>Image manipulation methods are very easy to use. For example: </p> 385 <pre class="code"> 386 Image image; 387 image.read("myImage.tiff"); 388 image.addNoise(GaussianNoise); 389 image.write("myImage.tiff"); 390 </pre> 391 adds gaussian noise to the image file "myImage.tiff". 392 <p>The operations supported by Image are shown in the following table: <br> 393 394 <ul><table nosave="" border="1"> 395 <caption><b>Image Image Manipulation Methods</b></caption> <tbody> 396 <tr align="center"> 397 <td><b>Method</b></td> 398 <td><b>Signature(s)</b></td> 399 <td><b>Description</b></td> 400 </tr> 401 <tr> 402 <td style="text-align: center;" valign="middle"> 403 <div align="center"><a name="adaptiveThreshold"></a> <font 404 size="-1">adaptiveThreshold<br> 405 </font></div> 406 </td> 407 <td valign="middle"><font size="-1">size_t width, size_t 408 height, size_t offset = 0<br> 409 </font></td> 410 <td valign="top"><font size="-1">Apply adaptive thresholding to 411 the image. Adaptive thresholding is useful if the ideal threshold level 412 is not known in advance, or if the illumination gradient is not 413 constant 414 across the image. Adaptive thresholding works by evaluating the mean 415 (average) of a pixel region (size specified by <i>width</i> and <i>height</i>) 416 and using the mean as the thresholding value. In order to remove 417 residual noise from the background, the threshold may be adjusted by 418 subtracting a constant <i>offset</i> (default zero) from the mean to 419 compute the threshold.</font><br> 420 </td> 421 </tr> 422 <tr> 423 <td style="text-align: center;"> 424 <center><a name="addNoise"></a> <font size="-1">addNoise</font></center> 425 </td> 426 <td><font size="-1"><a href="../Magick++/Enumerations.html#NoiseType">NoiseType</a> 427 noiseType_</font></td> 428 <td><font size="-1">Add noise to image with specified noise type.</font></td> 429 </tr> 430 <tr> 431 <td style="vertical-align: middle; text-align: center;"><small><a 432 name="addNoiseChannel"></a>addNoiseChannel<br> 433 </small></td> 434 <td style="vertical-align: middle;"><small>const ChannelType 435 channel_, const NoiseType noiseType_<br> 436 </small></td> 437 <td style="vertical-align: middle;"><small>Add noise to an image 438 channel with the specified noise type.</small><font size="-1"> The <span 439 style="font-style: italic;">channel_</span> parameter specifies the 440 channel to add noise to. The </font><small>noiseType_ parameter 441 specifies the type of noise.<br> 442 </small></td> 443 </tr> 444 <tr> 445 <td style="vertical-align: middle; text-align: center;"><small><a 446 name="affineTransform"></a>affineTransform<br> 447 </small></td> 448 <td style="vertical-align: middle;"><small>const DrawableAffine 449 &affine<br> 450 </small></td> 451 <td style="vertical-align: middle;"><small>Transform image by 452 specified affine (or free transform) matrix.<br> 453 </small></td> 454 </tr> 455 <tr> 456 <td style="text-align: center;" rowspan="4"> 457 <center><a name="annotate"></a> <font size="-1">annotate</font></center> 458 </td> 459 <td><font size="-1">const std::string &text_, const <a 460 href="../Magick++/Geometry.html"> Geometry</a> &location_</font></td> 461 <td><font size="-1">Annotate using specified text, and placement 462 location</font></td> 463 </tr> 464 <tr> 465 <td><font size="-1">string text_, const <a href="../Magick++/Geometry.html">Geometry</a> 466 &boundingArea_, <a href="../Magick++/Enumerations.html#GravityType">GravityType</a> 467 gravity_</font></td> 468 <td><font size="-1">Annotate using specified text, bounding area, 469 and placement gravity. If <i>boundingArea_</i> is invalid, then 470 bounding area is entire image.</font></td> 471 </tr> 472 <tr> 473 <td><font size="-1">const std::string &text_, const <a 474 href="../Magick++/Geometry.html"> Geometry</a> &boundingArea_, <a 475 href="../Magick++/Enumerations.html#GravityType">GravityType</a> gravity_, double 476 degrees_, </font></td> 477 <td><font size="-1">Annotate with text using specified text, 478 bounding area, placement gravity, and rotation. If <i>boundingArea_</i> 479 is invalid, then bounding area is entire image.</font></td> 480 </tr> 481 <tr> 482 <td><font size="-1">const std::string &text_, <a 483 href="../Magick++/Enumerations.html#GravityType"> GravityType</a> gravity_</font></td> 484 <td><font size="-1">Annotate with text (bounding area is entire 485 image) and placement gravity.</font></td> 486 </tr> 487 <tr> 488 <td style="text-align: center;"> 489 <center><a name="blur"></a> <font size="-1">blur</font></center> 490 </td> 491 <td><font size="-1">const double radius_ = 1, const double sigma_ 492 = 0.5</font></td> 493 <td><font size="-1">Blur image. The <i>radius_ </i>parameter 494 specifies the radius of the Gaussian, in pixels, not counting the 495 center 496 pixel. The <i>sigma_</i> parameter specifies the standard 497 deviation of the Laplacian, in pixels.</font></td> 498 </tr> 499 <tr> 500 <td style="vertical-align: middle; text-align: center;"><small><a 501 name="blurChannel"></a>blurChannel<br> 502 </small></td> 503 <td style="vertical-align: middle;"><small>const ChannelType 504 channel_, const double radius_ = 0.0, const double sigma_ = 1.0<br> 505 </small></td> 506 <td style="vertical-align: middle;"><font size="-1">Blur an image 507 channel. The <span style="font-style: italic;">channel_</span> 508 parameter specifies the channel to blur. The <i>radius_ </i>parameter 509 specifies the radius of the Gaussian, in pixels, not counting the 510 center 511 pixel. The <i>sigma_</i> parameter specifies the standard 512 deviation of the Laplacian, in pixels.</font></td> 513 </tr> 514 <tr> 515 <td style="text-align: center;"> 516 <center><a name="border"></a> <font size="-1">border</font></center> 517 </td> 518 <td><font size="-1">const <a href="../Magick++/Geometry.html">Geometry</a> 519 &geometry_ = "6x6+0+0"</font></td> 520 <td><font size="-1">Border image (add border to image). The 521 color of the border is specified by the <i>borderColor</i> attribute.</font></td> 522 </tr> 523 <tr> 524 <td style="text-align: center;"> 525 <center><a name="cdl"></a> <font size="-1">cdl</font></center> 526 </td> 527 <td><font size="-1">const std::string &cdl_</font></td> 528 <td><font size="-1">color correct with a color decision list. See <a href="http://en.wikipedia.org/wiki/ASC_CDL">http://en.wikipedia.org/wiki/ASC_CDL</a> for details.</font></td> 529 </tr> 530 <tr> 531 <td style="text-align: center;"> 532 <center><a name="channel"></a> <font size="-1">channel</font></center> 533 </td> 534 <td><font size="-1"><a href="../Magick++/Enumerations.html#ChannelType">ChannelType</a> 535 layer_</font></td> 536 <td><font size="-1">Extract channel from image. Use this option 537 to extract a particular channel from the image. <i>MatteChannel</i> 538 for example, is useful for extracting the opacity values 539 from an image.</font></td> 540 </tr> 541 <tr> 542 <td style="text-align: center;"> 543 <center><a name="charcoal"></a> <font size="-1">charcoal</font></center> 544 </td> 545 <td><font size="-1">const double radius_ = 1, const double sigma_ 546 = 0.5</font></td> 547 <td><font size="-1">Charcoal effect image (looks like charcoal 548 sketch). The <i>radius_</i> parameter specifies the radius of the 549 Gaussian, in pixels, not counting the center pixel. The <i>sigma_</i> 550 parameter specifies the standard deviation of the Laplacian, in pixels.</font></td> 551 </tr> 552 <tr> 553 <td style="text-align: center;"> 554 <center><a name="chop"></a> <font size="-1">chop</font></center> 555 </td> 556 <td><font size="-1">const <a href="../Magick++/Geometry.html">Geometry</a> 557 &geometry_</font></td> 558 <td><font size="-1">Chop image (remove vertical or horizontal 559 subregion of image)</font></td> 560 </tr> 561 <tr> 562 <td style="text-align: center;"> 563 <center><a name="colorize"></a> <font size="-1">colorize</font></center> 564 </td> 565 <td><font size="-1">const unsigned int opacityRed_, const 566 unsigned int opacityGreen_, const unsigned int opacityBlue_, const 567 Color &penColor_</font></td> 568 <td><font size="-1">Colorize image with pen color, using 569 specified percent opacity for red, green, and blue quantums.</font></td> 570 </tr> 571 <tr> 572 <td style="text-align: center;"> 573 <center><a name="colorMatrix"></a> <font size="-1">colorMatrix</font></center> 574 </td> 575 <td><font size="-1">const size_t order_, const double *color_matrix_</font></td> 576 <td><font size="-1">apply color correction to the image.</font></td> 577 </tr> 578 <tr> 579 <td style="text-align: center;"> 580 <center><a name="comment"></a> <font size="-1">comment</font></center> 581 </td> 582 <td><font size="-1">const std::string &comment_</font></td> 583 <td><font size="-1">Comment image (add comment string to 584 image). By default, each image is commented with its file name. 585 Use this method to assign a specific comment to the 586 image. Optionally you can include the image filename, type, 587 width, height, or other image attributes by embedding <a 588 href="../Magick++/FormatCharacters.html">special format characters.</a> </font></td> 589 </tr> 590 <tr> 591 <td style="text-align: center;" valign="middle"><font size="-1"><a 592 name="compare"></a> compare<br> 593 </font></td> 594 <td valign="middle"><font size="-1">const Image &reference_<br> 595 </font></td> 596 <td valign="top"><font size="-1">Compare current image with 597 another image. Sets <a href="Image++.html#meanErrorPerPixel">meanErrorPerPixel</a> 598 , <a href="Image++.html#normalizedMaxError">normalizedMaxError</a> , and <a 599 href="Image++.html#normalizedMeanError">normalizedMeanError</a> in the current 600 image. False is returned if the images are identical. An ErrorOption 601 exception is thrown if the reference image columns, rows, colorspace, 602 or 603 matte differ from the current image.</font><br> 604 </td> 605 </tr> 606 <tr> 607 <td style="text-align: center;" rowspan="3"> 608 <center><a name="composite"></a> <font size="-1">composite</font></center> 609 </td> 610 <td><font size="-1">const <a href="../Magick++/Image.html">Image</a> 611 &compositeImage_, ssize_t xOffset_, ssize_t yOffset_, <a 612 href="../Magick++/Enumerations.html#CompositeOperator"> CompositeOperator</a> 613 compose_ = <i>InCompositeOp</i></font></td> 614 <td><font size="-1">Compose an image onto the current image at 615 offset specified by <i>xOffset_</i>, <i>yOffset_ </i>using the 616 composition algorithm specified by <i>compose_</i>. </font></td> 617 </tr> 618 <tr> 619 <td><font size="-1">const <a href="../Magick++/Image.html">Image</a> 620 &compositeImage_, const <a href="../Magick++/Geometry.html">Geometry</a> 621 &offset_, <a href="../Magick++/Enumerations.html#CompositeOperator">CompositeOperator</a> 622 compose_ = <i>InCompositeOp</i></font></td> 623 <td><font size="-1">Compose an image onto the current image at 624 offset specified by <i>offset_</i> using the composition algorithm 625 specified by <i>compose_</i> . </font></td> 626 </tr> 627 <tr> 628 <td><font size="-1">const <a href="../Magick++/Image.html">Image</a> 629 &compositeImage_, <a href="../Magick++/Enumerations.html#GravityType">GravityType</a> 630 gravity_, <a href="../Magick++/Enumerations.html#CompositeOperator">CompositeOperator</a> 631 compose_ = <i>InCompositeOp</i></font></td> 632 <td><font size="-1">Compose an image onto the current image with 633 placement specified by <i>gravity_ </i>using the composition 634 algorithm 635 specified by <i>compose_</i>. </font></td> 636 </tr> 637 <tr> 638 <td style="text-align: center;"> 639 <center><a name="contrast"></a> <font size="-1">contrast</font></center> 640 </td> 641 <td><font size="-1">size_t sharpen_</font></td> 642 <td><font size="-1">Contrast image (enhance intensity differences 643 in image)</font></td> 644 </tr> 645 <tr> 646 <td style="text-align: center;"> 647 <center><a name="convolve"></a> <font size="-1">convolve</font></center> 648 </td> 649 <td><font size="-1">size_t order_, const double *kernel_</font></td> 650 <td><font size="-1">Convolve image. Applies a user-specified 651 convolution to the image. The <i>order_</i> parameter represents the 652 number of columns and rows in the filter kernel, and <i>kernel_</i> 653 is a two-dimensional array of doubles representing the convolution 654 kernel to apply.</font></td> 655 </tr> 656 <tr> 657 <td style="text-align: center;"> 658 <center><a name="crop"></a> <font size="-1">crop</font></center> 659 </td> 660 <td><font size="-1">const <a href="../Magick++/Geometry.html">Geometry</a> 661 &geometry_</font></td> 662 <td><font size="-1">Crop image (subregion of original image)</font></td> 663 </tr> 664 <tr> 665 <td style="text-align: center;"> 666 <center><a name="cycleColormap"></a> <font size="-1">cycleColormap</font></center> 667 </td> 668 <td><font size="-1">int amount_</font></td> 669 <td><font size="-1">Cycle image colormap</font></td> 670 </tr> 671 <tr> 672 <td style="text-align: center;"> 673 <center><a name="despeckle"></a> <font size="-1">despeckle</font></center> 674 </td> 675 <td><font size="-1">void</font></td> 676 <td><font size="-1">Despeckle image (reduce speckle noise)</font></td> 677 </tr> 678 <tr> 679 <td style="text-align: center;"> 680 <center><a name="display"></a> <font size="-1">display</font></center> 681 </td> 682 <td><font size="-1">void</font></td> 683 <td><font size="-1">Display image on screen.</font> <br> 684 <font size="-1"><b><font color="#ff0000">Caution: </font></b> if 685 an image format is is not compatible with the display visual (e.g. 686 JPEG on a colormapped display) then the original image will be 687 altered. Use a copy of the original if this is a problem.</font></td> 688 </tr> 689 <tr> 690 <td> 691 <center><a name="distort"></a> <font size="-1">distort</font></center> 692 </td> 693 <td><font size="-1">const DistortImageMethod method, const size_t number_arguments, const double *arguments, const bool bestfit = false </font></td> 694 <td><font size="-1">Distort image. Applies a user-specified 695 distortion to the image.</font></td> 696 </tr> 697 <tr> 698 <td style="text-align: center;" rowspan="2"> 699 <center><a name="draw"></a> <font size="-1">draw</font></center> 700 </td> 701 <td><font size="-1">const <a href="../Magick++/Drawable.html">Drawable</a> 702 &drawable_</font></td> 703 <td><font size="-1">Draw shape or text on image.</font></td> 704 </tr> 705 <tr> 706 <td><font size="-1">const std::list<<a href="../Magick++/Drawable.html">Drawable</a> 707 > &drawable_</font></td> 708 <td><font size="-1">Draw shapes or text on image using a set of 709 Drawable objects contained in an STL list. Use of this method improves 710 drawing performance and allows batching draw objects together in a 711 list for repeated use.</font></td> 712 </tr> 713 <tr> 714 <td style="text-align: center;"> 715 <center><a name="edge"></a> <font size="-1">edge</font></center> 716 </td> 717 <td><font size="-1">size_t radius_ = 0.0</font></td> 718 <td><font size="-1">Edge image (hilight edges in image). 719 The radius is the radius of the pixel neighborhood.. Specify a radius 720 of zero for automatic radius selection.</font></td> 721 </tr> 722 <tr> 723 <td style="text-align: center;"> 724 <center><a name="emboss"></a> <font size="-1">emboss</font></center> 725 </td> 726 <td><font size="-1">const double radius_ = 1, const double sigma_ 727 = 0.5</font></td> 728 <td><font size="-1">Emboss image (hilight edges with 3D effect). 729 The <i> radius_</i> parameter specifies the radius of the Gaussian, in 730 pixels, not counting the center pixel. The <i>sigma_</i> 731 parameter specifies the standard deviation of the Laplacian, in pixels.</font></td> 732 </tr> 733 <tr> 734 <td style="text-align: center;"> 735 <center><a name="enhance"></a> <font size="-1">enhance</font></center> 736 </td> 737 <td><font size="-1">void</font></td> 738 <td><font size="-1">Enhance image (minimize noise)</font></td> 739 </tr> 740 <tr> 741 <td style="text-align: center;"> 742 <center><a name="equalize"></a> <font size="-1">equalize</font></center> 743 </td> 744 <td><font size="-1">void</font></td> 745 <td><font size="-1">Equalize image (histogram equalization)</font></td> 746 </tr> 747 <tr> 748 <td style="text-align: center;"> 749 <center><a name="erase"></a> <font size="-1">erase</font></center> 750 </td> 751 <td><font size="-1">void</font></td> 752 <td><font size="-1">Set all image pixels to the current 753 background color.</font></td> 754 </tr> 755 <tr> 756 <td style="text-align: center;" rowspan="4"> 757 <center><a name="extent"></a> <font size="-1">extent</font></td> 758 <td><font size="-1">const <a href="../Magick++/Geometry.html"> Geometry</a> &geometry_</font></td> 759 <td rowspan="2"><font size="-1">extends the image as defined by the geometry, gravity, and image background color.</font></td> 760 </tr> 761 <tr> 762 <td><font size="-1">const <a href="../Magick++/Geometry.html">Geometry</a> 763 &geometry_, const <a href="../Magick++/Color.html">Color</a> &backgroundColor_</font></td> 764 </tr> 765 <tr> 766 <td><font size="-1">const <a href="../Magick++/Geometry.html"> Geometry</a> &geometry_, const <a href="http://www.imagemagick.org/api/Enumerations.html#GravityType">GravityType</a> 767 &gravity_</font></td> 768 <td rowspan="2"><font size="-1">extends the image as defined by the geometry, gravity, and image background color.</font></td> 769 </tr> 770 <tr> 771 <td><font size="-1">const <a href="../Magick++/Geometry.html">Geometry</a> 772 &geometry_, const <a href="../Magick++/Color.html">Color</a> &backgroundColor_, 773 const <a href="../Magick++/Enumerations.html#GravityType">GravityType</a> &gravity_</font></td> 774 </tr> 775 <tr> 776 <td style="text-align: center;"> 777 <center><a name="flip"></a> <font size="-1">flip</font></center> 778 </td> 779 <td><font size="-1">void</font></td> 780 <td><font size="-1">Flip image (reflect each scanline in the 781 vertical direction)</font></td> 782 </tr> 783 <tr> 784 <td style="text-align: center;" rowspan="4"> 785 <center><a name="floodFillColor"></a> <font size="-1">floodFill-</font> 786 <br> 787 <font size="-1">Color</font></center> 788 </td> 789 <td><font size="-1">ssize_t x_, ssize_t y_, const <a 790 href="../Magick++/Color.html"> Color</a> &fillColor_</font></td> 791 <td rowspan="2"><font size="-1">Flood-fill color across pixels 792 that match the color of the target pixel and are neighbors of the 793 target pixel. Uses current fuzz setting when determining color match.</font></td> 794 </tr> 795 <tr> 796 <td><font size="-1">const <a href="../Magick++/Geometry.html">Geometry</a> 797 &point_, const <a href="../Magick++/Color.html">Color</a> &fillColor_</font></td> 798 </tr> 799 <tr> 800 <td><font size="-1">ssize_t x_, ssize_t y_, const <a 801 href="../Magick++/Color.html"> Color</a> &fillColor_, const <a 802 href="../Magick++/Color.html">Color</a> 803 &borderColor_</font></td> 804 <td rowspan="2"><font size="-1">Flood-fill color across pixels 805 starting at target-pixel and stopping at pixels matching specified 806 border color. Uses current fuzz setting when determining color match.</font></td> 807 </tr> 808 <tr> 809 <td><font size="-1">const <a href="../Magick++/Geometry.html">Geometry</a> 810 &point_, const <a href="../Magick++/Color.html">Color</a> &fillColor_, 811 const <a href="../Magick++/Color.html">Color</a> &borderColor_</font></td> 812 </tr> 813 <tr> 814 <td style="text-align: center;"><a name="floodFillOpacity"></a> <font 815 size="-1">floodFillOpacity</font></td> 816 <td><font size="-1">const long x_, const long y_, const unsigned int 817 opacity_, const PaintMethod method_</font></td> 818 <td><font size="-1">Floodfill pixels matching color (within fuzz 819 factor) of target pixel(x,y) with replacement opacity value using 820 method.</font></td> 821 </tr> 822 <tr> 823 <td style="text-align: center;" rowspan="4"> 824 <center><a name="floodFillTexture"></a> <font size="-1">floodFill-</font> 825 <br> 826 <font size="-1">Texture</font></center> 827 </td> 828 <td><font size="-1">ssize_t x_, ssize_t y_, const 829 Image &texture_</font></td> 830 <td rowspan="2"><font size="-1">Flood-fill texture across pixels 831 that match the color of the target pixel and are neighbors of the 832 target pixel. Uses current fuzz setting when determining color match.</font></td> 833 </tr> 834 <tr> 835 <td><font size="-1">const <a href="../Magick++/Geometry.html">Geometry</a> 836 &point_, const Image &texture_</font></td> 837 </tr> 838 <tr> 839 <td><font size="-1">ssize_t x_, ssize_t y_, const Image 840 &texture_, const <a href="../Magick++/Color.html">Color</a> &borderColor_</font></td> 841 <td rowspan="2"><font size="-1">Flood-fill texture across pixels 842 starting at target-pixel and stopping at pixels matching specified 843 border color. Uses current fuzz setting when determining color match.</font></td> 844 </tr> 845 <tr> 846 <td><font size="-1">const <a href="../Magick++/Geometry.html">Geometry</a> 847 &point_, const Image &texture_, const <a href="../Magick++/Color.html"> 848 Color</a> 849 &borderColor_</font></td> 850 </tr> 851 <tr> 852 <td style="text-align: center;"> 853 <center><a name="flop"></a> <font size="-1">flop</font></center> 854 </td> 855 <td><font size="-1">void </font></td> 856 <td><font size="-1">Flop image (reflect each scanline in the 857 horizontal direction)</font></td> 858 </tr> 859 <tr> 860 <td style="text-align: center;" rowspan="2"> 861 <center><a name="frame"></a> <font size="-1">frame</font></center> 862 </td> 863 <td><font size="-1">const <a href="../Magick++/Geometry.html">Geometry</a> 864 &geometry_ = "25x25+6+6"</font></td> 865 <td rowspan="2"><font size="-1">Add decorative frame around image</font></td> 866 </tr> 867 <tr> 868 <td><font size="-1">size_t width_, size_t height_, 869 ssize_t x_, ssize_t y_, ssize_t innerBevel_ = 0, ssize_t outerBevel_ = 0</font></td> 870 </tr> 871 <tr> 872 <td> 873 <center><a name="fx"></a> <font size="-1">fx</font></center> 874 </td> 875 <td><font size="-1">const std::string expression, const Magick::ChannelType channel</font></td> 876 <td><font size="-1">Fx image. Applies a mathematical 877 expression to the image.</font></td> 878 </tr> 879 <tr> 880 <td style="text-align: center;" rowspan="2"> 881 <center><a name="gamma"></a> <font size="-1">gamma</font></center> 882 </td> 883 <td><font size="-1">double gamma_</font></td> 884 <td><font size="-1">Gamma correct image (uniform red, green, and 885 blue correction).</font></td> 886 </tr> 887 <tr> 888 <td><font size="-1">double gammaRed_, double gammaGreen_, double 889 gammaBlue_</font></td> 890 <td><font size="-1">Gamma correct red, green, and blue channels 891 of image.</font></td> 892 </tr> 893 <tr> 894 <td style="text-align: center;"> 895 <center><a name="gaussianBlur"></a> <font size="-1">gaussianBlur</font></center> 896 </td> 897 <td><font size="-1">const double width_, const double sigma_</font></td> 898 <td><font size="-1">Gaussian blur image. The number of neighbor 899 pixels to be included in the convolution mask is specified by 900 'width_'. For example, a width of one gives a (standard) 3x3 901 convolution mask. The standard deviation of the gaussian bell curve is 902 specified by 'sigma_'.</font></td> 903 </tr> 904 <tr> 905 <td style="vertical-align: middle; text-align: center;"><small><a 906 name="gaussianBlurChannel"></a>gaussianBlurChannel<br> 907 </small></td> 908 <td style="vertical-align: middle;"><small>const ChannelType 909 channel_, const double radius_ = 0.0, const double sigma_ = 1.0<br> 910 </small></td> 911 <td style="vertical-align: middle;"><font size="-1">Gaussian blur 912 an image channel. </font><font size="-1">The <span 913 style="font-style: italic;">channel_</span> parameter specifies the 914 channel to blur. </font><font size="-1">The number of neighbor 915 pixels to be included in the convolution mask is specified by 916 'width_'. For example, a width of one gives a (standard) 3x3 917 convolution mask. The standard deviation of the gaussian bell curve is 918 specified by 'sigma_'.</font></td> 919 </tr> 920 <tr> 921 <td style="text-align: center;" valign="middle"><font size="-1"><a 922 name="haldClut"></a> haldClut<br> 923 </font></td> 924 <td valign="middle"><font size="-1">const Image &reference_<br> 925 </font></td> 926 <td valign="top"><font size="-1">apply a Hald color lookup table to the image.</font><br> 927 </td> 928 </tr> 929 <tr> 930 <td style="text-align: center;"> 931 <center><a name="implode"></a> <font size="-1">implode</font></center> 932 </td> 933 <td><font size="-1">const double factor_</font></td> 934 <td><font size="-1">Implode image (special effect)</font></td> 935 </tr> 936 <tr> 937 <td style="text-align: center;"> 938 <center><a name="inverseFourierTransform"></a> <font size="-1">inverseFourierTransform</font></center> 939 </td> 940 <td><font size="-1">const Image &phaseImage_, const bool magnitude_</font></td> 941 <td><font size="-1">implements the inverse discrete Fourier transform (DFT) of the image either as a magnitude / phase or real / imaginary image pair.</font></td> 942 </tr> 943 <tr> 944 <td style="text-align: center;"> 945 <center><a name="label"></a> <font size="-1">label</font></center> 946 </td> 947 <td><font size="-1">const string &label_</font></td> 948 <td><font size="-1">Assign a label to an image. Use this option 949 to assign a specific label to the image. Optionally 950 you can include the image filename, type, width, height, or scene 951 number in the label by embedding <a href="../Magick++/FormatCharacters.html"> 952 special format characters.</a> If the first character of string is @, 953 the 954 image label is read from a file titled by the remaining characters in 955 the string. When converting to Postscript, use this option to 956 specify a header string to print above the image.</font></td> 957 </tr> 958 <tr> 959 <td style="vertical-align: top; text-align: center;"><small><a 960 name="level"></a>level<br> 961 </small></td> 962 <td style="vertical-align: top;"><small>const double black_point, 963 const double white_point, const double mid_point=1.0<br> 964 </small></td> 965 <td style="vertical-align: top;"><small>Level image. Adjust the 966 levels of the image by scaling the colors falling between specified 967 white and black points to the full available quantum range. The 968 parameters provided represent the black, mid (gamma), and white 969 points. The black point specifies the darkest color in the image. 970 Colors darker than the black point are set to zero. Mid point (gamma) 971 specifies a gamma correction to apply to the image. White point 972 specifies the lightest color in the image. Colors brighter than 973 the white point are set to the maximum quantum value. The black and 974 white point have the valid range 0 to MaxRGB while mid (gamma) has a 975 useful range of 0 to ten.<br> 976 </small></td> 977 </tr> 978 <tr> 979 <td style="vertical-align: middle; text-align: center;"><small><a 980 name="levelChannel"></a>levelChannel<br> 981 </small></td> 982 <td style="vertical-align: middle;"><small>const ChannelType 983 channel, const double black_point, const double white_point, const 984 double mid_point=1.0<br> 985 </small></td> 986 <td style="vertical-align: middle;"><small>Level image channel. 987 Adjust the levels of the image channel by scaling the values falling 988 between specified white and black points to the full available quantum 989 range. The parameters provided represent the black, mid (gamma), and 990 white points. The black point specifies the darkest color in the image. 991 Colors darker than the black point are set to zero. Mid point (gamma) 992 specifies a gamma correction to apply to the image. White point 993 specifies the lightest color in the image. Colors brighter than the 994 white point are set to the maximum quantum value. The black and white 995 point have the valid range 0 to MaxRGB while mid (gamma) has a useful 996 range of 0 to ten.<br> 997 </small></td> 998 </tr> 999 <tr> 1000 <td style="text-align: center;"> 1001 <center><a name="magnify"></a> <font size="-1">magnify</font></center> 1002 </td> 1003 <td><font size="-1">void</font></td> 1004 <td><font size="-1">Magnify image by integral size</font></td> 1005 </tr> 1006 <tr> 1007 <td style="text-align: center;"> 1008 <center><a name="map"></a> <font size="-1">map</font></center> 1009 </td> 1010 <td><font size="-1">const Image &mapImage_ , bool dither_ = 1011 false</font></td> 1012 <td><font size="-1">Remap image colors with closest color from 1013 reference image. Set dither_ to <i>true</i> in to apply 1014 Floyd/Steinberg 1015 error diffusion to the image. By default, color reduction chooses an 1016 optimal set of colors that best represent the original 1017 image. Alternatively, you can choose a 1018 particular set of colors from an image file 1019 with this option.</font></td> 1020 </tr> 1021 <tr> 1022 <td style="text-align: center;"> 1023 <center><a name="matteFloodfill"></a> <font size="-1">matteFloodfill</font></center> 1024 </td> 1025 <td><font size="-1">const <a href="../Magick++/Color.html">Color</a> 1026 &target_, const unsigned int opacity_, const ssize_t x_, const 1027 ssize_t 1028 y_, <a href="../Magick++/Enumerations.html#PaintMethod">PaintMethod</a> method_</font></td> 1029 <td><font size="-1">Floodfill designated area with a replacement 1030 opacity value.</font></td> 1031 </tr> 1032 <tr> 1033 <td style="text-align: center;"><a name="medianFilter"></a> <font 1034 size="-1">medianFilter</font></td> 1035 <td><font size="-1">const double radius_ = 0.0</font></td> 1036 <td><font size="-1">Filter image by replacing each pixel 1037 component with the median color in a circular neighborhood</font></td> 1038 </tr> 1039 <tr> 1040 <td style="text-align: center;"> 1041 <center><a name="mergeLayers"></a> <font size="-1">mergeLayers</font></center> 1042 </td> 1043 <td><font size="-1"><a href="../Magick++/Enumerations.html#LayerMethod">LayerMethod</a> 1044 noiseType_</font></td> 1045 <td><font size="-1">handle multiple images forming a set of image layers or animation frames.</font></td> 1046 </tr> 1047 <tr> 1048 <td style="text-align: center;"> 1049 <center><a name="minify"></a> <font size="-1">minify</font></center> 1050 </td> 1051 <td><font size="-1">void</font></td> 1052 <td><font size="-1">Reduce image by integral size</font></td> 1053 </tr> 1054 <tr> 1055 <td style="text-align: center;"><a name="modifyImage"></a> <font 1056 size="-1">modifyImage</font></td> 1057 <td><font size="-1">void</font></td> 1058 <td><font size="-1">Prepare to update image. Ensures that there 1059 is only one reference to the underlying image so that the underlying 1060 image may be safely modified without effecting previous generations of 1061 the image. Copies the underlying image to a new image if necessary.</font></td> 1062 </tr> 1063 <tr> 1064 <td style="text-align: center;"> 1065 <center><a name="modulate"></a> <font size="-1">modulate</font></center> 1066 </td> 1067 <td><font size="-1">double brightness_, double saturation_, 1068 double hue_</font></td> 1069 <td><font size="-1">Modulate percent hue, saturation, and 1070 brightness of an image. Modulation of saturation and brightness is as a 1071 ratio of the current value (1.0 for no change). Modulation of hue is an 1072 absolute rotation of -180 degrees to +180 degrees from the current 1073 position corresponding to an argument range of 0 to 2.0 (1.0 for no 1074 change).</font></td> 1075 </tr> 1076 <tr> 1077 <td style="vertical-align: middle; text-align: center;"><small><a 1078 name="motionBlur"></a>motionBlur<br> 1079 </small></td> 1080 <td style="vertical-align: middle;"><small>const double radius_, 1081 const double sigma_, const double angle_<br> 1082 </small></td> 1083 <td style="vertical-align: middle;"><small>Motion blur image with 1084 specified blur factor. The radius_ parameter specifies the radius of 1085 the Gaussian, in pixels, not counting the center pixel. The 1086 sigma_ parameter specifies the standard deviation of the Laplacian, in 1087 pixels. The angle_ parameter specifies the angle the object appears to 1088 be coming from (zero degrees is from the right).<br> 1089 </small></td> 1090 </tr> 1091 <tr> 1092 <td style="text-align: center;"> 1093 <center><a name="negate"></a> <font size="-1">negate</font></center> 1094 </td> 1095 <td><font size="-1">bool grayscale_ = false</font></td> 1096 <td><font size="-1">Negate colors in image. Replace every 1097 pixel with its complementary color (white becomes black, yellow becomes 1098 blue, etc.). Set grayscale to only negate grayscale values in 1099 image.</font></td> 1100 </tr> 1101 <tr> 1102 <td style="text-align: center;"> 1103 <center><a name="normalize"></a> <font size="-1">normalize</font></center> 1104 </td> 1105 <td><font size="-1">void</font></td> 1106 <td><font size="-1">Normalize image (increase contrast by 1107 normalizing the pixel values to span the full range of color values).</font></td> 1108 </tr> 1109 <tr> 1110 <td style="text-align: center;"> 1111 <center><a name="oilPaint"></a> <font size="-1">oilPaint</font></center> 1112 </td> 1113 <td><font size="-1">size_t radius_ = 3</font></td> 1114 <td><font size="-1">Oilpaint image (image looks like oil painting)</font></td> 1115 </tr> 1116 <tr> 1117 <td style="text-align: center;"> 1118 <center><a name="opacity"></a> <font size="-1">opacity</font></center> 1119 </td> 1120 <td><font size="-1">unsigned int opacity_</font></td> 1121 <td><font size="-1">Set or attenuate the opacity channel in the 1122 image. If the image pixels are opaque then they are set to the 1123 specified 1124 opacity value, otherwise they are blended with the supplied opacity 1125 value. The value of opacity_ ranges from 0 (completely opaque) to 1126 <i>MaxRGB</i> 1127 . The defines <i>OpaqueOpacity</i> and <i>TransparentOpacity</i> are 1128 available to specify completely opaque or completely transparent, 1129 respectively.</font></td> 1130 </tr> 1131 <tr> 1132 <td style="text-align: center;"> 1133 <center><a name="opaque"></a> <font size="-1">opaque</font></center> 1134 </td> 1135 <td><font size="-1">const <a href="../Magick++/Color.html">Color</a> 1136 &opaqueColor_, const <a href="../Magick++/Color.html">Color</a> &penColor_</font></td> 1137 <td><font size="-1">Change color of pixels matching opaqueColor_ 1138 to specified penColor_.</font></td> 1139 </tr> 1140 <tr nosave=""> 1141 <td style="text-align: center;" rowspan="2" nosave=""> 1142 <center><a name="ping"></a> <font size="-1">ping</font></center> 1143 </td> 1144 <td><font size="-1">const std::string &imageSpec_</font></td> 1145 <td rowspan="2" nosave=""><font size="-1">Ping is similar to read 1146 except only enough of the image is read to determine the image columns, 1147 rows, and filesize. The <a href="Image++.html#columns">columns</a> </font>, 1148 <font size="-1"><a href="Image++.html#rows">rows</a> , and <a 1149 href="Image++.html#fileSize">fileSize</a> 1150 attributes are valid after invoking ping. The image data is not 1151 valid after calling ping.</font></td> 1152 </tr> 1153 <tr> 1154 <td><font size="-1">const Blob &blob_</font></td> 1155 </tr> 1156 <tr> 1157 <td style="vertical-align: middle; text-align: center;"><small><a 1158 name="process"></a>process<br> 1159 </small></td> 1160 <td style="vertical-align: middle;"><small>std::string name_, 1161 const ssize_t argc_, char **argv_<br> 1162 </small></td> 1163 <td style="vertical-align: middle;"><small>Execute the named 1164 process module, passing any arguments via an argument vector, with 1165 argc_ 1166 specifying the number of arguments in the vector, and argv_ passing the 1167 address of an array of null-terminated C strings which constitute the 1168 argument vector. An exception is thrown if the requested process module 1169 does not exist, fails to load, or fails during execution.</small><br> 1170 </td> 1171 </tr> 1172 <tr> 1173 <td style="text-align: center;"> 1174 <center><a name="quantize"></a> <font size="-1">quantize</font></center> 1175 </td> 1176 <td><font size="-1">bool measureError_ = false</font></td> 1177 <td><font size="-1">Quantize image (reduce number of colors). Set 1178 measureError_ to true in order to calculate error attributes.</font></td> 1179 </tr> 1180 <tr> 1181 <td style="text-align: center;"> 1182 <center><a name="raise"></a> <font size="-1">raise</font></center> 1183 </td> 1184 <td><font size="-1">const <a href="../Magick++/Geometry.html">Geometry</a> 1185 &geometry_ = "6x6+0+0", bool raisedFlag_ = false</font></td> 1186 <td><font size="-1">Raise image (lighten or darken the edges of 1187 an image to give a 3-D raised or lowered effect)</font></td> 1188 </tr> 1189 <tr> 1190 <td style="text-align: center;" rowspan="8"> 1191 <center><a name="read"></a> <font size="-1">read</font></center> 1192 </td> 1193 <td><font size="-1">const string &imageSpec_</font></td> 1194 <td><font size="-1">Read image into current object</font></td> 1195 </tr> 1196 <tr> 1197 <td><font size="-1">const <a href="../Magick++/Geometry.html">Geometry</a> 1198 &size_, const std::string &imageSpec_</font></td> 1199 <td><font size="-1">Read image of specified size into current 1200 object. This form is useful for images that do not specify their size 1201 or to specify a size hint for decoding an image. For example, when 1202 reading a Photo CD, JBIG, or JPEG image, a size request causes the 1203 library to return an image which is the next resolution greater or 1204 equal to the specified size. This may result in memory and time savings.</font></td> 1205 </tr> 1206 <tr> 1207 <td><font size="-1">const <a href="../Magick++/Blob.html">Blob</a> &blob_</font></td> 1208 <td rowspan="5"><font size="-1">Read encoded image of specified 1209 size from an in-memory <a href="../Magick++/Blob.html">BLOB</a> into current 1210 object. Depending on the method arguments, the Blob size, depth, and 1211 format may also be specified. Some image formats require that size be 1212 specified. The default ImageMagick uses for depth depends on its 1213 Quantum size (8 or 16). If ImageMagick's Quantum size does not 1214 match that of the image, the depth may need to be specified. 1215 ImageMagick can usually automagically detect the image's format. 1216 When 1217 a format can't be automagically detected, the format must be specified.</font></td> 1218 </tr> 1219 <tr> 1220 <td><font size="-1">const <a href="../Magick++/Blob.html">Blob</a> 1221 &blob_, const <a href="../Magick++/Geometry.html">Geometry</a> &size_</font></td> 1222 </tr> 1223 <tr> 1224 <td><font size="-1">const <a href="../Magick++/Blob.html">Blob</a> 1225 &blob_, const <a href="../Magick++/Geometry.html">Geometry</a> &size_, 1226 size_t depth_</font></td> 1227 </tr> 1228 <tr> 1229 <td><font size="-1">const <a href="../Magick++/Blob.html">Blob</a> 1230 &blob_, const <a href="../Magick++/Geometry.html">Geometry</a> &size_, 1231 size_t depth_, const string &magick_ </font></td> 1232 </tr> 1233 <tr> 1234 <td><font size="-1">const <a href="../Magick++/Blob.html">Blob</a> 1235 &blob_, const <a href="../Magick++/Geometry.html">Geometry</a> &size_, 1236 const 1237 string &magick_</font></td> 1238 </tr> 1239 <tr> 1240 <td><font size="-1">const size_t width_, const size_t 1241 height_, std::string map_, const StorageType type_, const void *pixels_</font></td> 1242 <td><font size="-1">Read image based on an array of image pixels. 1243 The pixel data must be in scanline order top-to-bottom. The data can be 1244 character, short int, integer, float, or double. Float and double 1245 require the pixels to be normalized [0..1]. The other types are 1246 [0..MaxRGB]. For example, to create a 640x480 image from 1247 unsigned red-green-blue character data, use</font> 1248 <p><font size="-1"> image.read( 640, 480, "RGB", CharPixel, 1249 pixels );</font> </p> 1250 <p><font size="-1">The parameters are as follows:</font> <br> 1251 1252 <table border="0" width="100%"> 1253 <tbody> 1254 <tr> 1255 <td><font size="-1">width_</font></td> 1256 <td><font size="-1">Width in pixels of the image.</font></td> 1257 </tr> 1258 <tr> 1259 <td><font size="-1">height_</font></td> 1260 <td><font size="-1">Height in pixels of the image.</font></td> 1261 </tr> 1262 <tr> 1263 <td><font size="-1">map_</font></td> 1264 <td><font size="-1">This character string can be any 1265 combination or order of R = red, G = green, B = blue, A = alpha, C = 1266 cyan, Y = yellow M = magenta, and K = black. The ordering reflects the 1267 order of the pixels in the supplied pixel array.</font></td> 1268 </tr> 1269 <tr> 1270 <td><font size="-1">type_</font></td> 1271 <td><font size="-1">Pixel storage type (CharPixel, 1272 ShortPixel, IntegerPixel, FloatPixel, or DoublePixel)</font></td> 1273 </tr> 1274 <tr> 1275 <td><font size="-1">pixels_</font></td> 1276 <td><font size="-1">This array of values contain the pixel 1277 components as defined by the map_ and type_ parameters. The length of 1278 the arrays must equal the area specified by the width_ and height_ 1279 values and type_ parameters.</font></td> 1280 </tr> 1281 </tbody> 1282 </table> 1283 </p> 1284 </td> 1285 </tr> 1286 <tr> 1287 <td style="text-align: center;"> 1288 <center><a name="reduceNoise"></a> <font size="-1">reduceNoise</font></center> 1289 </td> 1290 <td><font size="-1">const double order_</font></td> 1291 <td><font size="-1">reduce noise in image using a noise peak elimination filter.</font></td> 1292 </tr> 1293 <tr> 1294 <td style="vertical-align: middle; text-align: center;"><small><a 1295 name="randomThreshold"></a>randomThreshold<br> 1296 </small></td> 1297 <td style="vertical-align: middle;"><small>const Geometry 1298 &thresholds_<br> 1299 </small></td> 1300 <td style="vertical-align: middle;"><small>Random threshold the 1301 image. Changes the value of individual pixels based on the intensity of 1302 each pixel compared to a random threshold. The result is a 1303 low-contrast, two color image. The thresholds_ argument is a 1304 geometry containing LOWxHIGH thresholds. If the string contains 1305 2x2, 3x3, or 4x4, then an ordered dither of order 2, 3, or 4 will be 1306 performed instead. This is a very fast alternative to 'quantize' based 1307 dithering.<br> 1308 </small></td> 1309 </tr> 1310 <tr> 1311 <td style="vertical-align: middle; text-align: center;"><small><a 1312 name="randomThresholdChannel"></a>randomThresholdChannel<br> 1313 </small></td> 1314 <td style="vertical-align: middle;"><small>const Geometry 1315 &thresholds_, const ChannelType channel_<br> 1316 </small></td> 1317 <td style="vertical-align: middle;"><small>Random threshold an 1318 image channel. Similar to <a href="Image++.html#randomThreshold">randomThreshold</a>() 1319 but restricted to the specified channel.<br> 1320 </small></td> 1321 </tr> 1322 <tr> 1323 <td style="text-align: center;"> 1324 <center><a name="roll"></a> <font size="-1">roll</font></center> 1325 </td> 1326 <td><font size="-1">int columns_, ssize_t rows_</font></td> 1327 <td><font size="-1">Roll image (rolls image vertically and 1328 horizontally) by specified number of columns and rows)</font></td> 1329 </tr> 1330 <tr> 1331 <td style="text-align: center;"> 1332 <center><a name="rotate"></a> <font size="-1">rotate</font></center> 1333 </td> 1334 <td><font size="-1">double degrees_</font></td> 1335 <td><font size="-1">Rotate image counter-clockwise by specified 1336 number of degrees.</font></td> 1337 </tr> 1338 <tr> 1339 <td style="text-align: center;"> 1340 <center><a name="sample"></a> <font size="-1">sample</font></center> 1341 </td> 1342 <td><font size="-1">const <a href="../Magick++/Geometry.html">Geometry</a> 1343 &geometry_ </font></td> 1344 <td><font size="-1">Resize image by using pixel sampling algorithm</font></td> 1345 </tr> 1346 <tr> 1347 <td style="text-align: center;"> 1348 <center><a name="scale"></a> <font size="-1">scale</font></center> 1349 </td> 1350 <td><font size="-1">const <a href="../Magick++/Geometry.html">Geometry</a> 1351 &geometry_</font></td> 1352 <td><font size="-1">Resize image by using simple ratio algorithm</font></td> 1353 </tr> 1354 <tr> 1355 <td style="text-align: center;"> 1356 <center><a name="segment"></a> <font size="-1">segment</font></center> 1357 </td> 1358 <td><font size="-1">double clusterThreshold_ = 1.0,</font> <br> 1359 <font size="-1">double smoothingThreshold_ = 1.5</font></td> 1360 <td><font size="-1">Segment (coalesce similar image components) 1361 by analyzing the histograms of the color components and identifying 1362 units that are homogeneous with the fuzzy c-means technique. Also uses <i>quantizeColorSpace</i> 1363 and <i>verbose</i> image attributes. Specify <i> clusterThreshold_</i> 1364 , 1365 as the number of pixels each cluster must 1366 exceed 1367 the cluster threshold to be considered valid. <i>SmoothingThreshold_</i> 1368 eliminates noise in the second derivative of the histogram. As 1369 the 1370 value is increased, you can expect a smoother 1371 second derivative. The default is 1.5.</font></td> 1372 </tr> 1373 <tr> 1374 <td style="text-align: center;"> 1375 <center><a name="shade"></a> <font size="-1">shade</font></center> 1376 </td> 1377 <td><font size="-1">double azimuth_ = 30, double elevation_ = 30,</font> 1378 <br> 1379 <font size="-1">bool colorShading_ = false</font></td> 1380 <td><font size="-1">Shade image using distant light source. 1381 Specify <i> azimuth_</i> and <i>elevation_</i> as the 1382 position of the light source. By default, the shading 1383 results as a grayscale image.. Set c<i>olorShading_</i> to <i>true</i> 1384 to 1385 shade the red, green, and blue components of the image.</font></td> 1386 </tr> 1387 <tr> 1388 <td style="text-align: center;"> 1389 <center><a name="shadow"></a> <font size="-1">shadow</font></center> 1390 </td> 1391 <td><font size="-1">const double percent_opacity = 80, const double sigma_ 1392 = 0.5, const ssize_t x_ = 0, const ssize_t y_ = 0</font></td> 1393 <td><font size="-1">simulate an image shadow</font></td> 1394 </tr> 1395 <tr> 1396 <td style="text-align: center;"> 1397 <center><a name="sharpen"></a> <font size="-1">sharpen</font></center> 1398 </td> 1399 <td><font size="-1">const double radius_ = 1, const double sigma_ 1400 = 0.5</font></td> 1401 <td><font size="-1">Sharpen pixels in image. The <i>radius_</i> 1402 parameter specifies the radius of the Gaussian, in pixels, not counting 1403 the center pixel. The <i>sigma_</i> parameter specifies the 1404 standard deviation of the Laplacian, in pixels.</font></td> 1405 </tr> 1406 <tr> 1407 <td style="vertical-align: middle; text-align: center;"><small><a 1408 name="sharpenChannel"></a>sharpenChannel<br> 1409 </small></td> 1410 <td style="vertical-align: middle;"><small>const ChannelType 1411 channel_, const double radius_ = 0.0, const double sigma_ = 1.0<br> 1412 </small></td> 1413 <td style="vertical-align: middle;"><font size="-1">Sharpen pixel 1414 quantums in an image channel The <span 1415 style="font-style: italic;">channel_</span> parameter specifies the 1416 channel to sharpen.. The <i>radius_</i> 1417 parameter specifies the radius of the Gaussian, in pixels, not counting 1418 the center pixel. The <i>sigma_</i> parameter specifies the 1419 standard deviation of the Laplacian, in pixels.</font></td> 1420 </tr> 1421 <tr> 1422 <td style="text-align: center;"> 1423 <center><a name="shave"></a> <font size="-1">shave</font></center> 1424 </td> 1425 <td><font size="-1">const Geometry &geometry_</font></td> 1426 <td><font size="-1">Shave pixels from image edges.</font></td> 1427 </tr> 1428 <tr> 1429 <td style="text-align: center;"> 1430 <center><a name="shear"></a> <font size="-1">shear</font></center> 1431 </td> 1432 <td><font size="-1">double xShearAngle_, double yShearAngle_</font></td> 1433 <td><font size="-1">Shear image (create parallelogram by sliding 1434 image by X or Y axis). Shearing slides one edge of an image along 1435 the X or Y axis, creating a 1436 parallelogram. An X direction shear slides an edge along the X 1437 axis, while a Y direction shear slides 1438 an edge along the Y axis. The amount of the shear is controlled 1439 by a shear angle. For X direction shears, x 1440 degrees is measured relative to the Y axis, and similarly, for Y 1441 direction shears y degrees is measured relative to the X 1442 axis. Empty triangles left over from shearing the image are 1443 filled with the color defined as <i>borderColor</i>. </font></td> 1444 </tr> 1445 <tr> 1446 <td style="text-align: center;"> 1447 <center><a name="solarize"></a> <font size="-1">solarize</font></center> 1448 </td> 1449 <td><font size="-1">double factor_ = 50.0</font></td> 1450 <td><font size="-1">Solarize image (similar to effect seen when 1451 exposing a photographic film to light during the development process)</font></td> 1452 </tr> 1453 <tr> 1454 <td style="text-align: center;"> 1455 <center><a name="splice"></a> <font size="-1">splice</font></center> 1456 </td> 1457 <td><font size="-1">const <a href="../Magick++/Geometry.html">Geometry</a> 1458 &geometry_</font></td> 1459 <td><font size="-1">splice the background color into the image</font></td> 1460 </tr> 1461 <tr> 1462 <td style="text-align: center;"> 1463 <center><a name="spread"></a> <font size="-1">spread</font></center> 1464 </td> 1465 <td><font size="-1">size_t amount_ = 3</font></td> 1466 <td><font size="-1">Spread pixels randomly within image by 1467 specified amount</font></td> 1468 </tr> 1469 <tr> 1470 <td style="text-align: center;"> 1471 <center><a name="stegano"></a> <font size="-1">stegano</font></center> 1472 </td> 1473 <td><font size="-1">const Image &watermark_</font></td> 1474 <td><font size="-1">Add a digital watermark to the image (based 1475 on second image)</font></td> 1476 </tr> 1477 <tr> 1478 <td> 1479 <center><a name="sparseColor"></a> <font size="-1">sparseColor</font></center> 1480 </td> 1481 <td><font size="-1">const ChannelType channel, const SparseColorMethod method, const size_t number_arguments, const double *arguments </font></td> 1482 <td><font size="-1">Sparse color image, given a set of coordinates, interpolates the colors found at those coordinates, across the whole image, using various methods.</font></td> 1483 </tr> 1484 <tr> 1485 <td style="text-align: center;"> 1486 <center><a name="statistics"></a> <font size="-1">statistics</font></center> 1487 </td> 1488 <td><font size="-1">ImageStatistics *statistics</font></td> 1489 <td><font size="-1">Obtain image statistics. Statistics are normalized to the range of 0.0 to 1.0 and are output to the specified ImageStatistics structure. The structure includes members maximum, minimum, mean, standard_deviation, and variance for each of these channels: red, green, blue, and opacity (e.g. statistics->red.maximum).</font></td> 1490 </tr> 1491 <tr> 1492 <td style="text-align: center;"> 1493 <center><a name="stereo"></a> <font size="-1">stereo</font></center> 1494 </td> 1495 <td><font size="-1">const Image &rightImage_</font></td> 1496 <td><font size="-1">Create an image which appears in stereo when 1497 viewed with red-blue glasses (Red image on left, blue on right)</font></td> 1498 </tr> 1499 <tr> 1500 <td style="text-align: center;"> 1501 <center><a name="swirl"></a> <font size="-1">swirl</font></center> 1502 </td> 1503 <td><font size="-1">double degrees_</font></td> 1504 <td><font size="-1">Swirl image (image pixels are rotated by 1505 degrees)</font></td> 1506 </tr> 1507 <tr> 1508 <td style="text-align: center;"> 1509 <center><a name="texture"></a> <font size="-1">texture</font></center> 1510 </td> 1511 <td><font size="-1">const Image &texture_</font></td> 1512 <td><font size="-1">Layer a texture on pixels matching image 1513 background color.</font></td> 1514 </tr> 1515 <tr> 1516 <td style="text-align: center;"> 1517 <center><a name="threshold"></a> <font size="-1">threshold</font></center> 1518 </td> 1519 <td><font size="-1">double threshold_</font></td> 1520 <td><font size="-1">Threshold image</font></td> 1521 </tr> 1522 <tr> 1523 <td style="text-align: center;" rowspan="2"> 1524 <center><a name="transform"></a> <font size="-1">transform</font></center> 1525 </td> 1526 <td><font size="-1">const <a href="../Magick++/Geometry.html">Geometry</a> 1527 &imageGeometry_</font></td> 1528 <td rowspan="2"><font size="-1">Transform image based on image 1529 and crop geometries. Crop geometry is optional.</font></td> 1530 </tr> 1531 <tr> 1532 <td><font size="-1">const <a href="../Magick++/Geometry.html">Geometry</a> 1533 &imageGeometry_, const <a href="../Magick++/Geometry.html">Geometry</a> 1534 &cropGeometry_ </font></td> 1535 </tr> 1536 <tr> 1537 <td style="text-align: center;"> 1538 <center><a name="transparent"></a> <font size="-1">transparent</font></center> 1539 </td> 1540 <td><font size="-1">const <a href="../Magick++/Color.html">Color</a> 1541 &color_</font></td> 1542 <td><font size="-1">Add matte image to image, setting pixels 1543 matching color to transparent.</font></td> 1544 </tr> 1545 <tr> 1546 <td style="text-align: center;"> 1547 <center><a name="trim"></a> <font size="-1">trim</font></center> 1548 </td> 1549 <td><font size="-1">void</font></td> 1550 <td><font size="-1">Trim edges that are the background color from 1551 the image.</font></td> 1552 </tr> 1553 <tr> 1554 <td style="text-align: center;"> 1555 <center><a name="unsharpmask"></a> <font size="-1">unsharpmask</font></center> 1556 </td> 1557 <td><font size="-1">double radius_, double sigma_, double 1558 amount_, double threshold_</font></td> 1559 <td><font size="-1">Sharpen the image using the unsharp mask 1560 algorithm. The <i>radius</i>_ 1561 parameter specifies the radius of the Gaussian, in pixels, not 1562 counting the center pixel. The <i>sigma</i>_ parameter specifies the 1563 standard deviation of the Gaussian, in pixels. The <i>amount</i>_ 1564 parameter specifies the percentage of the difference between the 1565 original and the blur image that is added back into the original. The <i>threshold</i>_ 1566 parameter specifies the threshold in pixels needed to apply the 1567 difference amount.</font></td> 1568 </tr> 1569 <tr> 1570 <td style="vertical-align: middle; text-align: center;"><small><a 1571 name="unsharpmaskChannel"></a>unsharpmaskChannel<br> 1572 </small></td> 1573 <td style="vertical-align: middle;"><small>const ChannelType 1574 channel_, const double radius_, const double sigma_, const double 1575 amount_, const double threshold_<br> 1576 </small></td> 1577 <td style="vertical-align: middle;"><small>Sharpen an image 1578 channel using the unsharp mask algorithm. The <span 1579 style="font-style: italic;">channel_</span> parameter specifies the 1580 channel to sharpen. </small><font size="-1">The <i>radius</i>_ 1581 parameter specifies the radius of the Gaussian, in pixels, not 1582 counting the center pixel. The <i>sigma</i>_ parameter specifies the 1583 standard deviation of the Gaussian, in pixels. The <i>amount</i>_ 1584 parameter specifies the percentage of the difference between the 1585 original and the blur image that is added back into the original. The <i>threshold</i>_ 1586 parameter specifies the threshold in pixels needed to apply the 1587 difference amount.</font></td> 1588 </tr> 1589 <tr> 1590 <td style="text-align: center;"> 1591 <center><a name="wave"></a> <font size="-1">wave</font></center> 1592 </td> 1593 <td><font size="-1">double amplitude_ = 25.0, double wavelength_ 1594 = 150.0</font></td> 1595 <td><font size="-1">Alter an image along a sine wave.</font></td> 1596 </tr> 1597 <tr> 1598 <td style="text-align: center;" rowspan="5"> 1599 <center><a name="write"></a> <font size="-1">write</font></center> 1600 </td> 1601 <td><font size="-1">const string &imageSpec_</font></td> 1602 <td><font size="-1">Write image to a file using filename i<i>mageSpec_</i> 1603 .</font> <br> 1604 <font size="-1"><b><font color="#ff0000">Caution: </font></b> if 1605 an image format is selected which is capable of supporting fewer 1606 colors than the original image or quantization has been requested, the 1607 original image will be quantized to fewer colors. Use a copy of the 1608 original if this is a problem.</font></td> 1609 </tr> 1610 <tr> 1611 <td><font size="-1"><a href="../Magick++/Blob.html">Blob</a> *blob_</font></td> 1612 <td rowspan="3"><font size="-1">Write image to a in-memory <a 1613 href="../Magick++/Blob.html"> BLOB</a> stored in <i>blob_</i>. The <i>magick</i>_ 1614 parameter specifies the image format to write (defaults to <a 1615 href="Image++.html#magick">magick</a> ). The depth_ parameter species the image 1616 depth (defaults to <a href="Image++.html#depth"> depth</a> ).</font> <br> 1617 <font size="-1"><b><font color="#ff0000">Caution: </font></b> if 1618 an image format is selected which is capable of supporting fewer 1619 colors than the original image or quantization has been requested, the 1620 original image will be quantized to fewer colors. Use a copy of the 1621 original if this is a problem.</font></td> 1622 </tr> 1623 <tr> 1624 <td><font size="-1"><a href="../Magick++/Blob.html">Blob</a> *blob_, 1625 std::string &magick_</font></td> 1626 </tr> 1627 <tr> 1628 <td><font size="-1"><a href="../Magick++/Blob.html">Blob</a> *blob_, 1629 std::string &magick_, size_t depth_</font></td> 1630 </tr> 1631 <tr> 1632 <td><font size="-1">const ssize_t x_, const ssize_t y_, const size_t 1633 columns_, const size_t rows_, const std::string &map_, 1634 const StorageType type_, void *pixels_</font></td> 1635 <td><font size="-1">Write pixel data into a buffer you supply. 1636 The data is saved either as char, short int, integer, float or double 1637 format in the order specified by the type_ parameter. For example, we 1638 want to extract scanline 1 of a 640x480 image as character data in 1639 red-green-blue order:</font> 1640 <p><font size="-1"> image.write(0,0,640,1,"RGB",0,pixels);</font> 1641 </p> 1642 <p><font size="-1">The parameters are as follows:</font> <br> 1643 1644 <table border="0" width="100%"> 1645 <tbody> 1646 <tr> 1647 <td><font size="-1">x_</font></td> 1648 <td><font size="-1">Horizontal ordinate of left-most 1649 coordinate of region to extract.</font></td> 1650 </tr> 1651 <tr> 1652 <td><font size="-1">y_</font></td> 1653 <td><font size="-1">Vertical ordinate of top-most 1654 coordinate of region to extract.</font></td> 1655 </tr> 1656 <tr> 1657 <td><font size="-1">columns_</font></td> 1658 <td><font size="-1">Width in pixels of the region to 1659 extract.</font></td> 1660 </tr> 1661 <tr> 1662 <td><font size="-1">rows_</font></td> 1663 <td><font size="-1">Height in pixels of the region to 1664 extract.</font></td> 1665 </tr> 1666 <tr> 1667 <td><font size="-1">map_</font></td> 1668 <td><font size="-1">This character string can be any 1669 combination or order of R = red, G = green, B = blue, A = alpha, C = 1670 cyan, Y = yellow, M = magenta, and K = black. The ordering reflects 1671 the order of the pixels in the supplied pixel array.</font></td> 1672 </tr> 1673 <tr> 1674 <td><font size="-1">type_</font></td> 1675 <td><font size="-1">Pixel storage type (CharPixel, 1676 ShortPixel, IntegerPixel, FloatPixel, or DoublePixel)</font></td> 1677 </tr> 1678 <tr> 1679 <td><font size="-1">pixels_</font></td> 1680 <td><font size="-1">This array of values contain the pixel 1681 components as defined by the map_ and type_ parameters. The length of 1682 the arrays must equal the area specified by the width_ and height_ 1683 values and type_ parameters.</font></td> 1684 </tr> 1685 </tbody> 1686 </table> 1687 </p> 1688 </td> 1689 </tr> 1690 <tr> 1691 <td style="text-align: center;"> 1692 <center><a name="resize"></a> <font size="-1">resize</font></center> 1693 </td> 1694 <td><font size="-1">const <a href="../Magick++/Geometry.html">Geometry</a> 1695 &geometry_</font></td> 1696 <td><font size="-1">Resize image to specified size.</font></td> 1697 </tr> 1698 </tbody> 1699 </table></ul> 1700 </p> 1701 </div> 1702 <h2> <a name="Image Attributes"></a> Image Attributes</h2> 1703 <div class="doc-section"> 1704 Image attributes are set and obtained via methods in Image. Except for 1705 methods which accept pointer arguments (e.g. c<tt>hromaBluePrimary)</tt> 1706 all methods return attributes by value. 1707 <p>Image attributes are easily used. For example, to set the resolution 1708 of the TIFF file "file.tiff" to 150 dots-per-inch (DPI) in both the 1709 horizontal and vertical directions, you can use the following example 1710 code: </p> 1711 <pre class="code"> 1712 string filename("file.tiff"); 1713 Image image; 1714 image.read(filename); 1715 image.resolutionUnits(PixelsPerInchResolution); 1716 image.density(Geometry(150,150)); // could also use image.density("150x150") 1717 image.write(filename) 1718 </pre> 1719 The supported image attributes and the method arguments required to 1720 obtain them are shown in the following table: <br> 1721 1722 <ul><table border="1"> 1723 <caption>Image Attributes</caption> <tbody> 1724 <tr> 1725 <td> 1726 <center><b>Function</b></center> 1727 </td> 1728 <td> 1729 <center><b>Type</b></center> 1730 </td> 1731 <td> 1732 <center><b>Get Signature</b></center> 1733 </td> 1734 <td> 1735 <center><b>Set Signature</b></center> 1736 </td> 1737 <td> 1738 <center><b>Description</b></center> 1739 </td> 1740 </tr> 1741 <tr> 1742 <td> 1743 <center><a name="adjoin"></a> <font size="-1">adjoin</font></center> 1744 </td> 1745 <td><font size="-1">bool</font></td> 1746 <td><font size="-1">void</font></td> 1747 <td><font size="-1">bool flag_</font></td> 1748 <td><font size="-1">Join images into a single multi-image file.</font></td> 1749 </tr> 1750 <tr> 1751 <td> 1752 <center><a name="antiAlias"></a> <font size="-1">antiAlias</font></center> 1753 </td> 1754 <td><font size="-1">bool</font></td> 1755 <td><font size="-1">void</font></td> 1756 <td><font size="-1">bool flag_</font></td> 1757 <td><font size="-1">Control antialiasing of rendered Postscript 1758 and Postscript or TrueType fonts. Enabled by default.</font></td> 1759 </tr> 1760 <tr> 1761 <td> 1762 <center><a name="animationDelay"></a> <font size="-1">animation-</font> 1763 <br> 1764 <font size="-1">Delay</font></center> 1765 </td> 1766 <td><font size="-1">size_t (0 to 65535)</font></td> 1767 <td><font size="-1">void</font></td> 1768 <td><font size="-1">size_t delay_</font></td> 1769 <td><font size="-1">Time in 1/100ths of a second (0 to 65535) 1770 which must expire before displaying the next image in an animated 1771 sequence. This option is useful for regulating the animation of a 1772 sequence of GIF images within Netscape.</font></td> 1773 </tr> 1774 <tr> 1775 <td> 1776 <center><a name="animationIterations"></a> <font size="-1">animation-</font> 1777 <br> 1778 <font size="-1">Iterations</font></center> 1779 </td> 1780 <td><font size="-1">size_t</font></td> 1781 <td><font size="-1">void</font></td> 1782 <td><font size="-1">size_t iterations_</font></td> 1783 <td><font size="-1">Number of iterations to loop an animation 1784 (e.g. Netscape loop extension) for.</font></td> 1785 </tr> 1786 <tr> 1787 <td style="vertical-align: middle; text-align: center;"><small><a 1788 name="attribute"></a>attribute<br> 1789 </small></td> 1790 <td style="vertical-align: middle;"><small>string<br> 1791 </small></td> 1792 <td style="vertical-align: top;" valign="top"><small>const 1793 std::string name_<br> 1794 </small></td> 1795 <td style="vertical-align: top;" valign="top"><small>const 1796 std::string name_, const std::string value_</small></td> 1797 <td style="vertical-align: middle;"><small>An arbitrary named 1798 image attribute. Any number of named attributes may be attached to the 1799 image. For example, the image comment is a named image attribute with 1800 the name "comment". EXIF tags are attached to the image as named 1801 attributes. Use the syntax "EXIF:<tag>" to request an EXIF tag 1802 similar to "EXIF:DateTime".</small><br> 1803 </td> 1804 </tr> 1805 <tr> 1806 <td> 1807 <center><a name="backgroundColor"></a> <font size="-1">background-</font> 1808 <br> 1809 <font size="-1">Color</font></center> 1810 </td> 1811 <td><font size="-1"><a href="../Magick++/Color.html">Color</a> </font></td> 1812 <td><font size="-1">void</font></td> 1813 <td><font size="-1">const <a href="../Magick++/Color.html">Color</a> 1814 &color_</font></td> 1815 <td><font size="-1">Image background color</font></td> 1816 </tr> 1817 <tr> 1818 <td> 1819 <center><a name="backgroundTexture"></a> <font size="-1">background-</font> 1820 <br> 1821 <font size="-1">Texture</font></center> 1822 </td> 1823 <td><font size="-1">string</font></td> 1824 <td><font size="-1">void</font></td> 1825 <td><font size="-1">const string &texture_</font></td> 1826 <td><font size="-1">Image file name to use as the background 1827 texture. Does not modify image pixels.</font></td> 1828 </tr> 1829 <tr> 1830 <td> 1831 <center><a name="baseColumns"></a> <font size="-1">baseColumns</font></center> 1832 </td> 1833 <td><font size="-1">size_t</font></td> 1834 <td><font size="-1">void</font></td> 1835 <td bgcolor="#666666"><font size="-1"> </font></td> 1836 <td><font size="-1">Base image width (before transformations)</font></td> 1837 </tr> 1838 <tr> 1839 <td> 1840 <center><a name="baseFilename"></a> <font size="-1">baseFilename</font></center> 1841 </td> 1842 <td><font size="-1">string</font></td> 1843 <td><font size="-1">void</font></td> 1844 <td bgcolor="#666666"><font size="-1"> </font></td> 1845 <td><font size="-1">Base image filename (before transformations)</font></td> 1846 </tr> 1847 <tr> 1848 <td> 1849 <center><a name="baseRows"></a> <font size="-1">baseRows</font></center> 1850 </td> 1851 <td><font size="-1">size_t</font></td> 1852 <td><font size="-1">void</font></td> 1853 <td bgcolor="#666666"><font size="-1"> </font></td> 1854 <td><font size="-1">Base image height (before transformations)</font></td> 1855 </tr> 1856 <tr> 1857 <td> 1858 <center><a name="borderColor"></a> <font size="-1">borderColor</font></center> 1859 </td> 1860 <td><font size="-1"><a href="../Magick++/Color.html">Color</a> </font></td> 1861 <td><font size="-1">void</font></td> 1862 <td><font size="-1"> const <a href="../Magick++/Color.html">Color</a> 1863 &color_</font></td> 1864 <td><font size="-1">Image border color</font></td> 1865 </tr> 1866 <tr> 1867 <td><a name="boundingBox"></a> <font size="-1">boundingBox</font></td> 1868 <td><font size="-1">Geometry</font></td> 1869 <td><font size="-1">void</font></td> 1870 <td bgcolor="#666666"><font size="-1"> </font></td> 1871 <td><font size="-1">Return smallest bounding box enclosing 1872 non-border pixels. The current fuzz value is used when discriminating 1873 between pixels. This is the crop bounding box used by 1874 crop(Geometry(0,0)).</font></td> 1875 </tr> 1876 <tr> 1877 <td> 1878 <center><a name="boxColor"></a> <font size="-1">boxColor</font></center> 1879 </td> 1880 <td><font size="-1"><a href="../Magick++/Color.html">Color</a> </font></td> 1881 <td><font size="-1">void</font></td> 1882 <td><font size="-1">const <a href="../Magick++/Color.html">Color</a> 1883 &boxColor_</font></td> 1884 <td><font size="-1">Base color that annotation text is rendered 1885 on.</font></td> 1886 </tr> 1887 <tr> 1888 <td><a name="cacheThreshold"></a> <font size="-1">cacheThreshold</font></td> 1889 <td><font size="-1">size_t</font></td> 1890 <td bgcolor="#666666"><font size="-1"> </font></td> 1891 <td><font size="-1">const size_t</font></td> 1892 <td><font size="-1">Pixel cache threshold in megabytes. Once this 1893 threshold is exceeded, all subsequent pixels cache operations are 1894 to/from disk. This is a static method and the attribute it sets is 1895 shared by all Image objects.</font></td> 1896 </tr> 1897 <tr> 1898 <td style="vertical-align: middle;" valign="middle"><small><a 1899 name="channelDepth"></a>channelDepth<br> 1900 </small></td> 1901 <td style="vertical-align: middle;" valign="middle"><small>size_t 1902 <br> 1903 </small></td> 1904 <td style="vertical-align: middle;" valign="middle"><small>const 1905 ChannelType channel_<br> 1906 </small></td> 1907 <td style="vertical-align: middle;"><small>const ChannelType 1908 channel_, const size_t depth_<br> 1909 </small></td> 1910 <td style="vertical-align: middle;"><small>Channel modulus depth. 1911 The channel modulus depth represents the minimum number of bits 1912 required 1913 to support the channel without loss. Setting the channel's modulus 1914 depth 1915 modifies the channel (i.e. discards resolution) if the requested 1916 modulus 1917 depth is less than the current modulus depth, otherwise the channel is 1918 not altered. There is no attribute associated with the modulus depth so 1919 the current modulus depth is obtained by inspecting the pixels. As a 1920 result, the depth returned may be less than the most recently set 1921 channel depth. Subsequent image processing may result in increasing the 1922 channel depth.<br> 1923 </small></td> 1924 </tr> 1925 <tr> 1926 <td> 1927 <center><a name="chromaBluePrimary"></a> <font size="-1">chroma-</font> 1928 <br> 1929 <font size="-1">BluePrimary</font></center> 1930 </td> 1931 <td><font size="-1">double x & y</font></td> 1932 <td><font size="-1">double *x_, double *y_</font></td> 1933 <td><font size="-1">double x_, double y_</font></td> 1934 <td><font size="-1">Chromaticity blue primary point (e.g. x=0.15, 1935 y=0.06)</font></td> 1936 </tr> 1937 <tr> 1938 <td> 1939 <center><a name="chromaGreenPrimary"></a> <font size="-1">chroma-</font> 1940 <br> 1941 <font size="-1">GreenPrimary</font></center> 1942 </td> 1943 <td><font size="-1">double x & y</font></td> 1944 <td><font size="-1">double *x_, double *y_</font></td> 1945 <td><font size="-1">double x_, double y_</font></td> 1946 <td><font size="-1">Chromaticity green primary point (e.g. x=0.3, 1947 y=0.6)</font></td> 1948 </tr> 1949 <tr> 1950 <td> 1951 <center><a name="chromaRedPrimary"></a> <font size="-1">chroma-</font> 1952 <br> 1953 <font size="-1">RedPrimary</font></center> 1954 </td> 1955 <td><font size="-1">double x & y</font></td> 1956 <td><font size="-1">double *x_, double *y_</font></td> 1957 <td><font size="-1">double x_, double y_</font></td> 1958 <td><font size="-1">Chromaticity red primary point (e.g. x=0.64, 1959 y=0.33)</font></td> 1960 </tr> 1961 <tr> 1962 <td> 1963 <center><a name="chromaWhitePoint"></a> <font size="-1">chroma-</font> 1964 <br> 1965 <font size="-1">WhitePoint</font></center> 1966 </td> 1967 <td><font size="-1">double x & y</font></td> 1968 <td><font size="-1">double*x_, double *y_</font></td> 1969 <td><font size="-1">double x_, double y_</font></td> 1970 <td><font size="-1">Chromaticity white point (e.g. x=0.3127, 1971 y=0.329)</font></td> 1972 </tr> 1973 <tr> 1974 <td> 1975 <center><a name="classType"></a> <font size="-1">classType</font></center> 1976 </td> 1977 <td><font size="-1"><a href="../Magick++/Enumerations.html#ClassType">ClassType</a> 1978 </font></td> 1979 <td><font size="-1">void</font></td> 1980 <td><font size="-1"> <a href="../Magick++/Enumerations.html#ClassType">ClassType</a> 1981 class_</font></td> 1982 <td><font size="-1">Image storage class. Note that 1983 conversion from a DirectClass image to a PseudoClass image may result 1984 in a loss of color due to the limited size of the palette (256 or 1985 65535 colors).</font></td> 1986 </tr> 1987 <tr> 1988 <td> 1989 <center><a name="clipMask"></a> <font size="-1">clipMask</font></center> 1990 </td> 1991 <td><font size="-1">Image</font></td> 1992 <td><font size="-1">void</font></td> 1993 <td><font size="-1">const Image &clipMask_</font></td> 1994 <td><font size="-1">Associate a clip mask image with the current 1995 image. The clip mask image must have the same dimensions as the current 1996 image or an exception is thrown. Clipping occurs wherever pixels are 1997 transparent in the clip mask image. Clipping Pass an invalid image to 1998 unset an existing clip mask.</font></td> 1999 </tr> 2000 <tr> 2001 <td> 2002 <center><a name="colorFuzz"></a> <font size="-1">colorFuzz</font></center> 2003 </td> 2004 <td><font size="-1">double</font></td> 2005 <td><font size="-1">void</font></td> 2006 <td><font size="-1">double fuzz_</font></td> 2007 <td><font size="-1">Colors within this distance are considered 2008 equal. A number of algorithms search for a target color. By 2009 default the color must be exact. Use this option to match colors that 2010 are close to the target color in RGB space.</font></td> 2011 </tr> 2012 <tr> 2013 <td> 2014 <center><a name="colorMap"></a> <font size="-1">colorMap</font></center> 2015 </td> 2016 <td><font size="-1"><a href="../Magick++/Color.html">Color</a> </font></td> 2017 <td><font size="-1">size_t index_</font></td> 2018 <td><font size="-1">size_t index_, const <a 2019 href="../Magick++/Color.html"> Color</a> &color_</font></td> 2020 <td><font size="-1">Color at colormap index.</font></td> 2021 </tr> 2022 <tr> 2023 <td valign="middle"> 2024 <div align="center"><a name="colorMapSize"></a> <font size="-1">colorMapSize<br> 2025 </font></div> 2026 </td> 2027 <td valign="middle"><font size="-1">size_t<br> 2028 </font></td> 2029 <td valign="middle"><font size="-1">void<br> 2030 </font></td> 2031 <td valign="middle"><font size="-1">size_t entries_<br> 2032 </font></td> 2033 <td valign="middle"><font size="-1">Number of entries in the 2034 colormap. Setting the colormap size may extend or truncate the 2035 colormap. 2036 The maximum number of supported entries is specified by the <i>MaxColormapSize</i>constant, 2037 and is dependent on the value of QuantumDepth when ImageMagick is 2038 compiled. An exception is thrown if more entries are requested than may 2039 be supported. Care should be taken when truncating the colormap to 2040 ensure that the image colormap indexes reference valid colormap entries.</font><br> 2041 </td> 2042 </tr> 2043 <tr> 2044 <td> 2045 <center><a name="colorSpace"></a> <font size="-1">colorSpace</font></center> 2046 </td> 2047 <td><font size="-1"><a href="../Magick++/Enumerations.html#ColorspaceType">ColorspaceType</a> 2048 colorSpace_</font></td> 2049 <td><font size="-1">void</font></td> 2050 <td><font size="-1"><a href="../Magick++/Enumerations.html#ColorspaceType">ColorspaceType</a> 2051 colorSpace_</font></td> 2052 <td><font size="-1">The colorspace (e.g. CMYK) used to represent 2053 the image pixel colors. Image pixels are always stored as RGB(A) except 2054 for the case of CMY(K).</font></td> 2055 </tr> 2056 <tr> 2057 <td> 2058 <center><a name="columns"></a> <font size="-1">columns</font></center> 2059 </td> 2060 <td><font size="-1">size_t</font></td> 2061 <td><font size="-1">void</font></td> 2062 <td bgcolor="#666666"><font size="-1"> </font></td> 2063 <td><font size="-1">Image width</font></td> 2064 </tr> 2065 <tr> 2066 <td> 2067 <center><a name="comment"></a> <font size="-1">comment</font></center> 2068 </td> 2069 <td><font size="-1">string</font></td> 2070 <td><font size="-1">void</font></td> 2071 <td bgcolor="#666666"><font size="-1"> </font></td> 2072 <td><font size="-1">Image comment</font></td> 2073 </tr> 2074 <tr> 2075 <td> 2076 <center><a name="compose"></a> <font size="-1">compose</font></center> 2077 </td> 2078 <td><font size="-1"><a href="../Magick++/Enumerations.html#CompositeOperator">CompositeOperator</a> 2079 </font></td> 2080 <td><small><font size="-1"><small>void</small></font></small></td> 2081 <td><small><font size="-1"><small><a 2082 href="../Magick++/Enumerations.html#CompositeOperator">CompositeOperator</a> 2083 compose_</small></font></small></td> 2084 <td><font size="-1">Composition operator to be used when 2085 composition is implicitly used (such as for image flattening).</font></td> 2086 </tr> 2087 <tr> 2088 <td> 2089 <center><a name="compressType"></a> <font size="-1">compress-</font> 2090 <br> 2091 <font size="-1">Type</font></center> 2092 </td> 2093 <td><font size="-1"><a href="../Magick++/Enumerations.html#CompressionType">CompressionType</a> 2094 </font></td> 2095 <td><small><font size="-1"><small>void</small></font></small></td> 2096 <td><small><font size="-1"><small><a 2097 href="../Magick++/Enumerations.html#CompressionType">CompressionType</a> 2098 compressType_</small></font></small></td> 2099 <td><font size="-1">Image compresion type. The default is the 2100 compression type of the specified image file.</font></td> 2101 </tr> 2102 <tr> 2103 <td> 2104 <center><a name="debug"></a> <font size="-1">debug</font></center> 2105 </td> 2106 <td><font size="-1">bool</font></td> 2107 <td><small><font size="-1"><small>void</small></font></small></td> 2108 <td><small><font size="-1"><small>bool flag_</small></font></small></td> 2109 <td><font size="-1">Enable printing of internal debug messages 2110 from ImageMagick as it executes.</font></td> 2111 </tr> 2112 <tr> 2113 <td style="text-align: center; vertical-align: middle;"><small><a 2114 name="defineValue"></a>defineValue<br> 2115 </small></td> 2116 <td style="vertical-align: middle; text-align: left;"><small>string<br> 2117 </small></td> 2118 <td style="vertical-align: middle;"><small>const std::string 2119 &magick_, const std::string &key_<br> 2120 </small></td> 2121 <td style="vertical-align: middle;"><small>const std::string 2122 &magick_, const std::string &key_, const std::string 2123 &value_<br> 2124 </small></td> 2125 <td style="vertical-align: top;"><small>Set or obtain a 2126 definition string to applied when encoding or decoding the specified 2127 format. The meanings of the definitions are format specific. The format 2128 is designated by the <span style="font-style: italic;">magick_</span> 2129 argument, the format-specific key is designated by <span 2130 style="font-style: italic;">key_</span>, and the associated value is 2131 specified by <span style="font-style: italic;">value_</span>. See the 2132 defineSet() method if the key must be removed entirely.</small><br> 2133 </td> 2134 </tr> 2135 <tr> 2136 <td style="text-align: center; vertical-align: middle;"><small><a 2137 name="defineSet"></a>defineSet<br> 2138 </small></td> 2139 <td style="vertical-align: middle; text-align: left;"><small>bool<br> 2140 </small></td> 2141 <td style="vertical-align: middle;"><small>const std::string 2142 &magick_, const std::string &key_<br> 2143 </small></td> 2144 <td style="vertical-align: middle;"><small>const std::string 2145 &magick_, const std::string &key_, bool flag_<br> 2146 </small></td> 2147 <td style="vertical-align: middle;"><small>Set or obtain a 2148 definition flag to applied when encoding or decoding the specified 2149 format.</small><small>. Similar to the defineValue() method except that 2150 passing the <span style="font-style: italic;">flag_</span> value 2151 'true' 2152 creates a value-less define with that format and key. Passing the <span 2153 style="font-style: italic;">f</span><span style="font-style: italic;">lag_</span> 2154 value 'false' removes any existing matching definition. The method 2155 returns 'true' if a matching key exists, and 'false' if no matching key 2156 exists.<br> 2157 </small></td> 2158 </tr> 2159 <tr> 2160 <td> 2161 <center><a name="density"></a> <font size="-1">density</font></center> 2162 </td> 2163 <td><font size="-1"><a href="../Magick++/Geometry.html">Geometry</a> 2164 (default 72x72)</font></td> 2165 <td><font size="-1">void</font></td> 2166 <td><font size="-1">const <a href="../Magick++/Geometry.html">Geometry</a> 2167 &density_</font></td> 2168 <td><font size="-1">Vertical and horizontal resolution in pixels 2169 of the image. This option specifies an image density when decoding a 2170 Postscript or Portable Document page. Often used with <i>psPageSize</i>.</font></td> 2171 </tr> 2172 <tr> 2173 <td> 2174 <center><a name="depth"></a> <font size="-1">depth</font></center> 2175 </td> 2176 <td><font size="-1"> size_t (8-32)</font></td> 2177 <td><font size="-1">void</font></td> 2178 <td><font size="-1">size_t depth_</font></td> 2179 <td><font size="-1">Image depth. Used to specify the bit depth 2180 when reading or writing raw images or when the output format 2181 supports multiple depths. Defaults to the quantum depth that 2182 ImageMagick is compiled with.</font></td> 2183 </tr> 2184 <tr> 2185 <td> 2186 <center><a name="endian"></a> <font size="-1">endian</font></center> 2187 </td> 2188 <td><font size="-1"><a href="../Magick++/Enumerations.html#EndianType">EndianType</a> 2189 </font></td> 2190 <td><font size="-1">void</font></td> 2191 <td><font size="-1"><a href="../Magick++/Enumerations.html#EndianType">EndianType</a> 2192 endian_</font></td> 2193 <td><font size="-1">Specify (or obtain) endian option for formats 2194 which support it.</font></td> 2195 </tr> 2196 <tr> 2197 <td> 2198 <center><a name="directory"></a> <font size="-1">directory</font></center> 2199 </td> 2200 <td><font size="-1">string</font></td> 2201 <td><font size="-1">void</font></td> 2202 <td><font size="-1"> </font></td> 2203 <td><font size="-1">Tile names from within an image montage</font></td> 2204 </tr> 2205 <tr> 2206 <td> 2207 <center><a name="file"></a> <font size="-1">file</font></center> 2208 </td> 2209 <td><font size="-1">FILE *</font></td> 2210 <td><font size="-1">FILE *</font></td> 2211 <td><font size="-1">FILE *file_</font></td> 2212 <td><font size="-1">Image file descriptor.</font></td> 2213 </tr> 2214 <tr> 2215 <td> 2216 <center><a name="fileName"></a> <font size="-1">fileName</font></center> 2217 </td> 2218 <td><font size="-1">string</font></td> 2219 <td><font size="-1">void</font></td> 2220 <td><font size="-1">const string &fileName_</font></td> 2221 <td><font size="-1">Image file name.</font></td> 2222 </tr> 2223 <tr> 2224 <td> 2225 <center><a name="fileSize"></a> <font size="-1">fileSize</font></center> 2226 </td> 2227 <td><font size="-1">off_t</font></td> 2228 <td><font size="-1">void</font></td> 2229 <td bgcolor="#666666"><font size="-1"> </font></td> 2230 <td><font size="-1">Number of bytes of the image on disk</font></td> 2231 </tr> 2232 <tr> 2233 <td> 2234 <center><a name="fillColor"></a> <font size="-1">fillColor</font></center> 2235 </td> 2236 <td><font size="-1">Color</font></td> 2237 <td><font size="-1">void</font></td> 2238 <td><font size="-1">const Color &fillColor_</font></td> 2239 <td><font size="-1">Color to use when filling drawn objects</font></td> 2240 </tr> 2241 <tr> 2242 <td> 2243 <center><a name="fillPattern"></a> <font size="-1">fillPattern</font></center> 2244 </td> 2245 <td><font size="-1">Image</font></td> 2246 <td><font size="-1">void</font></td> 2247 <td><font size="-1">const Image &fillPattern_</font></td> 2248 <td><font size="-1">Pattern image to use when filling drawn 2249 objects.</font></td> 2250 </tr> 2251 <tr> 2252 <td> 2253 <center><a name="fillRule"></a> <font size="-1">fillRule</font></center> 2254 </td> 2255 <td><font size="-1"><a href="../Magick++/Enumerations.html#FillRule">FillRule</a> 2256 </font></td> 2257 <td><font size="-1">void</font></td> 2258 <td><font size="-1">const Magick::FillRule &fillRule_</font></td> 2259 <td><font size="-1">Rule to use when filling drawn objects.</font></td> 2260 </tr> 2261 <tr> 2262 <td> 2263 <center><a name="filterType"></a> <font size="-1">filterType</font></center> 2264 </td> 2265 <td><font size="-1"><a href="../Magick++/Enumerations.html#FilterTypes">FilterTypes</a> 2266 </font></td> 2267 <td><font size="-1">void</font></td> 2268 <td><font size="-1"><a href="../Magick++/Enumerations.html#FilterTypes">FilterTypes</a> 2269 filterType_</font></td> 2270 <td><font size="-1">Filter to use when resizing image. The 2271 reduction filter employed has a significant effect on the time required 2272 to resize an image and the resulting quality. The default filter is <i>Lanczos</i> 2273 which has been shown to produce high quality results when reducing most 2274 images.</font></td> 2275 </tr> 2276 <tr> 2277 <td> 2278 <center><a name="font"></a> <font size="-1">font</font></center> 2279 </td> 2280 <td><font size="-1">string</font></td> 2281 <td><font size="-1">void</font></td> 2282 <td><font size="-1">const string &font_</font></td> 2283 <td><font size="-1">Text rendering font. If the font is a fully 2284 qualified X server font name, the font is obtained from an X 2285 server. To use a TrueType font, precede the TrueType filename with an 2286 @. Otherwise, specify a Postscript font name (e.g. 2287 "helvetica").</font></td> 2288 </tr> 2289 <tr> 2290 <td> 2291 <center><a name="fontPointsize"></a> <font size="-1">fontPointsize</font></center> 2292 </td> 2293 <td><font size="-1">size_t</font></td> 2294 <td><font size="-1">void</font></td> 2295 <td><font size="-1">size_t pointSize_</font></td> 2296 <td><font size="-1">Text rendering font point size</font></td> 2297 </tr> 2298 <tr> 2299 <td> 2300 <center><a name="fontTypeMetrics"></a> <font size="-1">fontTypeMetrics</font></center> 2301 </td> 2302 <td><font size="-1"><a href="../Magick++/TypeMetric.html">TypeMetric</a> </font></td> 2303 <td><font size="-1">const std::string &text_, <a 2304 href="../Magick++/TypeMetric.html"> TypeMetric</a> *metrics</font></td> 2305 <td bgcolor="#666666"><font size="-1"> </font></td> 2306 <td><font size="-1">Update metrics with font type metrics using 2307 specified <i>text</i>, and current <a href="Image++.html#font">font</a> and <a 2308 href="Image++.html#fontPointsize">fontPointSize</a> settings.</font></td> 2309 </tr> 2310 <tr> 2311 <td> 2312 <center><a name="format"></a> <font size="-1">format</font></center> 2313 </td> 2314 <td><font size="-1">string</font></td> 2315 <td><font size="-1">void</font></td> 2316 <td bgcolor="#666666"><font size="-1"> </font></td> 2317 <td><font size="-1">Long form image format description.</font></td> 2318 </tr> 2319 <tr> 2320 <td> 2321 <center><a name="gamma"></a> <font size="-1">gamma</font></center> 2322 </td> 2323 <td><font size="-1">double (typical range 0.8 to 2.3)</font></td> 2324 <td><font size="-1">void</font></td> 2325 <td bgcolor="#666666"><font size="-1"> </font></td> 2326 <td><font size="-1">Gamma level of the image. The same color 2327 image displayed on two different workstations may 2328 look different due to differences in the display monitor. 2329 Use gamma correction to adjust for this 2330 color difference.</font></td> 2331 </tr> 2332 <tr> 2333 <td> 2334 <center><a name="geometry"></a> <font size="-1">geometry</font></center> 2335 </td> 2336 <td><font size="-1"><a href="../Magick++/Geometry.html">Geometry</a> </font></td> 2337 <td><font size="-1">void</font></td> 2338 <td bgcolor="#666666"><font size="-1"> </font></td> 2339 <td><font size="-1">Preferred size of the image when encoding.</font></td> 2340 </tr> 2341 <tr> 2342 <td> 2343 <center><a name="gifDisposeMethod"></a> <font size="-1">gifDispose-</font> 2344 <br> 2345 <font size="-1">Method</font></center> 2346 </td> 2347 <td><font size="-1">size_t</font> <br> 2348 <font size="-1">{ 0 = Disposal not specified,</font> <br> 2349 <font size="-1">1 = Do not dispose of graphic,</font> <br> 2350 <font size="-1">3 = Overwrite graphic with background color,</font> 2351 <br> 2352 <font size="-1">4 = Overwrite graphic with previous graphic. }</font></td> 2353 <td><font size="-1">void</font></td> 2354 <td><font size="-1">size_t disposeMethod_</font></td> 2355 <td><font size="-1">GIF disposal method. This option is used to 2356 control how successive frames are rendered (how the preceding frame is 2357 disposed of) when creating a GIF animation.</font></td> 2358 </tr> 2359 <tr> 2360 <td> 2361 <center><a name="iccColorProfile"></a> <font size="-1">iccColorProfile</font></center> 2362 </td> 2363 <td><font size="-1"><a href="../Magick++/Blob.html">Blob</a> </font></td> 2364 <td><font size="-1">void</font></td> 2365 <td><font size="-1">const <a href="../Magick++/Blob.html">Blob</a> 2366 &colorProfile_</font></td> 2367 <td><font size="-1">ICC color profile. Supplied via a <a 2368 href="../Magick++/Blob.html"> Blob</a> since Magick++/ and ImageMagick do not 2369 currently support formating this data structure directly. 2370 Specifications are available from the <a href="http://www.color.org/"> 2371 International Color Consortium</a> for the format of ICC color profiles.</font></td> 2372 </tr> 2373 <tr> 2374 <td> 2375 <center><a name="interlaceType"></a> <font size="-1">interlace-</font> 2376 <br> 2377 <font size="-1">Type</font></center> 2378 </td> 2379 <td><font size="-1"><a href="../Magick++/Enumerations.html#InterlaceType">InterlaceType</a> 2380 </font></td> 2381 <td><font size="-1">void</font></td> 2382 <td><font size="-1"><a href="../Magick++/Enumerations.html#InterlaceType">InterlaceType</a> 2383 interlace_</font></td> 2384 <td><font size="-1">The type of interlacing scheme (default <i>NoInterlace</i> 2385 ). This option is used to specify the type of interlacing 2386 scheme for raw image formats such as RGB or YUV. <i>NoInterlace</i> 2387 means do not interlace, <i>LineInterlace</i> uses scanline 2388 interlacing, and <i>PlaneInterlace</i> uses plane interlacing. <i> 2389 PartitionInterlace</i> is like <i>PlaneInterlace</i> except the 2390 different planes are saved to individual files (e.g. 2391 image.R, image.G, and image.B). Use <i>LineInterlace</i> or <i> 2392 PlaneInterlace</i> to create an interlaced GIF or progressive JPEG 2393 image.</font></td> 2394 </tr> 2395 <tr> 2396 <td> 2397 <center><a name="iptcProfile"></a> <font size="-1">iptcProfile</font></center> 2398 </td> 2399 <td><font size="-1"><a href="../Magick++/Blob.html">Blob</a> </font></td> 2400 <td><font size="-1">void</font></td> 2401 <td><font size="-1">const <a href="../Magick++/Blob.html">Blob</a> & 2402 iptcProfile_</font></td> 2403 <td><font size="-1">IPTC profile. Supplied via a <a 2404 href="../Magick++/Blob.html"> Blob</a> since Magick++ and ImageMagick do not 2405 currently support formating this data structure directly. 2406 Specifications are available from the <a href="http://www.iptc.org/"> 2407 International Press Telecommunications Council</a> for IPTC profiles.</font></td> 2408 </tr> 2409 <tr> 2410 <td> 2411 <center><a name="label"></a> <font size="-1">label</font></center> 2412 </td> 2413 <td><font size="-1">string</font></td> 2414 <td><font size="-1">void</font></td> 2415 <td><font size="-1">const string &label_</font></td> 2416 <td><font size="-1">Image label</font></td> 2417 </tr> 2418 <tr> 2419 <td> 2420 <center><a name="magick"></a> <font size="-1">magick</font></center> 2421 </td> 2422 <td><font size="-1">string</font></td> 2423 <td><font size="-1">void</font></td> 2424 <td><font size="-1"> const string &magick_</font></td> 2425 <td><font size="-1">Get image format (e.g. "GIF")</font></td> 2426 </tr> 2427 <tr> 2428 <td> 2429 <center><a name="matte"></a> <font size="-1">matte</font></center> 2430 </td> 2431 <td><font size="-1">bool</font></td> 2432 <td><font size="-1">void</font></td> 2433 <td><font size="-1">bool matteFlag_</font></td> 2434 <td><font size="-1">True if the image has transparency. If set 2435 True, store matte channel if the image has one otherwise create 2436 an opaque one.</font></td> 2437 </tr> 2438 <tr> 2439 <td> 2440 <center><a name="matteColor"></a> <font size="-1">matteColor</font></center> 2441 </td> 2442 <td><font size="-1"><a href="../Magick++/Color.html">Color</a> </font></td> 2443 <td><font size="-1">void</font></td> 2444 <td><font size="-1">const <a href="../Magick++/Color.html">Color</a> 2445 &matteColor_</font></td> 2446 <td><font size="-1">Image matte (frame) color</font></td> 2447 </tr> 2448 <tr> 2449 <td> 2450 <center><a name="meanErrorPerPixel"></a> <font size="-1">meanError-</font> 2451 <br> 2452 <font size="-1">PerPixel</font></center> 2453 </td> 2454 <td><font size="-1">double</font></td> 2455 <td><font size="-1">void</font></td> 2456 <td bgcolor="#666666"><font size="-1"> </font></td> 2457 <td><font size="-1">The mean error per pixel computed when an 2458 image is color reduced. This parameter is only valid if verbose is set 2459 to true and the image has just been quantized.</font></td> 2460 </tr> 2461 <tr> 2462 <td style="text-align: center; vertical-align: middle;"><font 2463 size="-1"><a name="modulusDepth"></a>modulusDepth<br> 2464 </font></td> 2465 <td style="text-align: left; vertical-align: middle;"><small>size_t 2466 <br> 2467 </small></td> 2468 <td style="text-align: left; vertical-align: middle;"><small><font 2469 size="-1"><small>void<br> 2470 </small></font></small></td> 2471 <td style="text-align: left; vertical-align: middle;"><small>size_t 2472 depth_<br> 2473 </small></td> 2474 <td style="text-align: left; vertical-align: middle;"><small>Image 2475 modulus depth (minimum number of bits required to support 2476 red/green/blue components without loss of accuracy). The pixel modulus 2477 depth may be decreased by supplying a value which is less than the 2478 current value, updating the pixels (reducing accuracy) to the new 2479 depth. 2480 The pixel modulus depth can not be increased over the current value 2481 using this method.<br> 2482 </small></td> 2483 </tr> 2484 <tr> 2485 <td> 2486 <center><a name="monochrome"></a> <font size="-1">monochrome</font></center> 2487 </td> 2488 <td><font size="-1">bool</font></td> 2489 <td><font size="-1">void</font></td> 2490 <td><font size="-1">bool flag_</font></td> 2491 <td><font size="-1">Transform the image to black and white</font></td> 2492 </tr> 2493 <tr> 2494 <td> 2495 <center><a name="montageGeometry"></a> <font size="-1">montage-</font> 2496 <br> 2497 <font size="-1">Geometry</font></center> 2498 </td> 2499 <td><font size="-1"><a href="../Magick++/Geometry.html">Geometry</a> </font></td> 2500 <td><font size="-1">void</font></td> 2501 <td bgcolor="#666666"><font size="-1"> </font></td> 2502 <td><font size="-1">Tile size and offset within an image montage. 2503 Only valid for montage images.</font></td> 2504 </tr> 2505 <tr> 2506 <td> 2507 <center><a name="normalizedMaxError"></a> <font size="-1">normalized-</font> 2508 <br> 2509 <font size="-1">MaxError</font></center> 2510 </td> 2511 <td><font size="-1">double</font></td> 2512 <td><font size="-1">void</font></td> 2513 <td bgcolor="#666666"><font size="-1"> </font></td> 2514 <td><font size="-1">The normalized max error per pixel computed 2515 when an image is color reduced. This parameter is only valid if verbose 2516 is set to true and the image has just been quantized.</font></td> 2517 </tr> 2518 <tr> 2519 <td> 2520 <center><a name="normalizedMeanError"></a> <font size="-1">normalized-</font> 2521 <br> 2522 <font size="-1">MeanError</font></center> 2523 </td> 2524 <td><font size="-1">double</font></td> 2525 <td><font size="-1">void</font></td> 2526 <td bgcolor="#666666"><font size="-1"> </font></td> 2527 <td><font size="-1">The normalized mean error per pixel computed 2528 when an image is color reduced. This parameter is only valid if verbose 2529 is set to true and the image has just been quantized.</font></td> 2530 </tr> 2531 <tr> 2532 <td style="text-align: center; vertical-align: middle;"><small><a 2533 name="orientation"></a>orientation<br> 2534 </small></td> 2535 <td style="vertical-align: middle;"><small><a 2536 href="../Magick++/Enumerations.html#OrientationType">OrientationType</a></small></td> 2537 <td style="vertical-align: top;"><small>void</small><br> 2538 </td> 2539 <td style="vertical-align: middle;"><small><a 2540 href="../Magick++/Enumerations.html#OrientationType">OrientationType</a> 2541 orientation_</small></td> 2542 <td style="vertical-align: top;"><small>Image orientation. 2543 Supported by some file formats such as DPX and TIFF. Useful for 2544 turning the right way up.<br> 2545 </small></td> 2546 </tr> 2547 <tr> 2548 <td> 2549 <center><a name="packets"></a> <font size="-1">packets</font></center> 2550 </td> 2551 <td><font size="-1">size_t</font></td> 2552 <td><font size="-1">void</font></td> 2553 <td bgcolor="#666666"><font size="-1"> </font></td> 2554 <td><font size="-1">The number of runlength-encoded packets in</font> 2555 <br> 2556 <font size="-1">the image</font></td> 2557 </tr> 2558 <tr> 2559 <td> 2560 <center><a name="packetSize"></a> <font size="-1">packetSize</font></center> 2561 </td> 2562 <td><font size="-1">size_t</font></td> 2563 <td><font size="-1">void</font></td> 2564 <td bgcolor="#666666"><font size="-1"> </font></td> 2565 <td><font size="-1">The number of bytes in each pixel packet</font></td> 2566 </tr> 2567 <tr> 2568 <td> 2569 <center><a name="page"></a> <font size="-1">page</font></center> 2570 </td> 2571 <td><font size="-1"><a href="../Magick++/Geometry.html#PostscriptPageSize">Geometry</a> 2572 </font></td> 2573 <td><font size="-1">void</font></td> 2574 <td><font size="-1">const <a 2575 href="../Magick++/Geometry.html#PostscriptPageSize"> Geometry</a> &pageSize_</font></td> 2576 <td><font size="-1">Preferred size and location of an image 2577 canvas.</font> 2578 <p><font size="-1">Use this option to specify the dimensions 2579 and position of the Postscript page in dots per inch or a TEXT page in 2580 pixels. This option is typically used in concert with <i><a 2581 href="Image++.html#density"> density</a> </i>.</font> </p> 2582 <p><font size="-1">Page may also be used to position a GIF 2583 image (such as for a scene in an animation)</font></p> 2584 </td> 2585 </tr> 2586 <tr> 2587 <td> 2588 <center><a name="pixelColor"></a> <font size="-1">pixelColor</font></center> 2589 </td> 2590 <td><font size="-1"><a href="../Magick++/Color.html">Color</a> </font></td> 2591 <td><font size="-1">ssize_t x_, ssize_t y_</font></td> 2592 <td><font size="-1">ssize_t x_, ssize_t y_, const <a 2593 href="../Magick++/Color.html"> Color</a> &color_</font></td> 2594 <td><font size="-1">Get/set pixel color at location x & y.</font></td> 2595 </tr> 2596 <tr> 2597 <td valign="top"> 2598 <div align="center"><a name="profile"></a> <small>profile</small><br> 2599 </div> 2600 </td> 2601 <td valign="top"><a href="../Magick++/Blob.html"><small> Blob</small><small><br> 2602 </small></a> </td> 2603 <td valign="top"><small>const std::string name_</small><small><br> 2604 </small></td> 2605 <td valign="top"><small>const std::string name_, const Blob 2606 &colorProfile_</small><small><br> 2607 </small></td> 2608 <td valign="top"><small>Get/set/remove </small><small> a named 2609 profile</small><small>. Valid names include </small><small>"*", 2610 "8BIM", "ICM", "IPTC", or a user/format-defined profile name. </small><br> 2611 </td> 2612 </tr> 2613 <tr> 2614 <td> 2615 <center><a name="quality"></a> <font size="-1">quality</font></center> 2616 </td> 2617 <td><font size="-1">size_t (0 to 100)</font></td> 2618 <td><font size="-1">void</font></td> 2619 <td><font size="-1">size_t quality_</font></td> 2620 <td><font size="-1">JPEG/MIFF/PNG compression level (default 75).</font></td> 2621 </tr> 2622 <tr> 2623 <td> 2624 <center><a name="quantizeColors"></a> <font size="-1">quantize-</font> 2625 <br> 2626 <font size="-1">Colors</font></center> 2627 </td> 2628 <td><font size="-1">size_t</font></td> 2629 <td><font size="-1">void</font></td> 2630 <td><font size="-1">size_t colors_</font></td> 2631 <td><font size="-1">Preferred number of colors in the image. The 2632 actual number of colors in the image may be less than your request, but 2633 never more. Images with less unique colors than specified with this 2634 option will have any duplicate or unused colors removed.</font></td> 2635 </tr> 2636 <tr> 2637 <td> 2638 <center><a name="quantizeColorSpace"></a> <font size="-1">quantize-</font> 2639 <br> 2640 <font size="-1">ColorSpace</font></center> 2641 </td> 2642 <td><font size="-1"><a href="../Magick++/Enumerations.html#ColorspaceType">ColorspaceType</a> 2643 </font></td> 2644 <td><font size="-1">void</font></td> 2645 <td><font size="-1"><a href="../Magick++/Enumerations.html#ColorspaceType">ColorspaceType</a> 2646 colorSpace_</font></td> 2647 <td><font size="-1">Colorspace to quantize colors in (default 2648 RGB). Empirical evidence suggests that distances in color spaces such 2649 as YUV or YIQ correspond to perceptual color differences more closely 2650 than do distances in RGB space. These color spaces may give better 2651 results when color reducing an image.</font></td> 2652 </tr> 2653 <tr> 2654 <td> 2655 <center><a name="quantizeDither"></a> <font size="-1">quantize-</font> 2656 <br> 2657 <font size="-1">Dither</font></center> 2658 </td> 2659 <td><font size="-1">bool</font></td> 2660 <td><font size="-1">void</font></td> 2661 <td><font size="-1">bool flag_</font></td> 2662 <td><font size="-1">Apply Floyd/Steinberg error diffusion to the 2663 image. The basic strategy of dithering is to trade 2664 intensity 2665 resolution for spatial resolution by 2666 averaging the intensities of several 2667 neighboring pixels. Images which suffer from 2668 severe contouring when reducing colors can be 2669 improved with this option. The quantizeColors or monochrome option must 2670 be set for this option to take effect.</font></td> 2671 </tr> 2672 <tr> 2673 <td> 2674 <center><a name="quantizeTreeDepth"></a> <font size="-1">quantize-</font> 2675 <br> 2676 <font size="-1">TreeDepth</font></center> 2677 </td> 2678 <td><font size="-1">size_t </font></td> 2679 <td><font size="-1">void</font></td> 2680 <td><font size="-1">size_t treeDepth_</font></td> 2681 <td><font size="-1">Depth of the quantization color 2682 classification tree. Values of 0 or 1 allow selection of the optimal 2683 tree depth for the color reduction algorithm. Values between 2 and 8 2684 may be used to manually adjust the tree depth.</font></td> 2685 </tr> 2686 <tr> 2687 <td> 2688 <center><a name="renderingIntent"></a> <font size="-1">rendering-</font> 2689 <br> 2690 <font size="-1">Intent</font></center> 2691 </td> 2692 <td><font size="-1"><a href="../Magick++/Enumerations.html#RenderingIntent">RenderingIntent</a> 2693 </font></td> 2694 <td><font size="-1">void</font></td> 2695 <td><font size="-1"><a href="../Magick++/Enumerations.html#RenderingIntent">RenderingIntent</a> 2696 render_</font></td> 2697 <td><font size="-1">The type of rendering intent</font></td> 2698 </tr> 2699 <tr> 2700 <td> 2701 <center><a name="resolutionUnits"></a> <font size="-1">resolution-</font> 2702 <br> 2703 <font size="-1">Units</font></center> 2704 </td> 2705 <td><font size="-1"><a href="../Magick++/Enumerations.html#ResolutionType">ResolutionType</a> 2706 </font></td> 2707 <td><font size="-1">void</font></td> 2708 <td><font size="-1"><a href="../Magick++/Enumerations.html#ResolutionType">ResolutionType</a> 2709 units_</font></td> 2710 <td><font size="-1">Units of image resolution</font></td> 2711 </tr> 2712 <tr> 2713 <td> 2714 <center><a name="rows"></a> <font size="-1">rows</font></center> 2715 </td> 2716 <td><font size="-1">size_t</font></td> 2717 <td><font size="-1">void</font></td> 2718 <td bgcolor="#666666"><font size="-1"> </font></td> 2719 <td><font size="-1">The number of pixel rows in the image</font></td> 2720 </tr> 2721 <tr> 2722 <td> 2723 <center><a name="scene"></a> <font size="-1">scene</font></center> 2724 </td> 2725 <td><font size="-1">size_t</font></td> 2726 <td><font size="-1">void</font></td> 2727 <td><font size="-1">size_t scene_</font></td> 2728 <td><font size="-1">Image scene number</font></td> 2729 </tr> 2730 <tr> 2731 <td> 2732 <center><a name="signature"></a> <font size="-1">signature</font></center> 2733 </td> 2734 <td><font size="-1">string</font></td> 2735 <td><font size="-1">bool force_ = false</font></td> 2736 <td bgcolor="#666666"><font size="-1"> </font></td> 2737 <td><font size="-1">Image MD5 signature. Set force_ to 'true' to 2738 force re-computation of signature.</font></td> 2739 </tr> 2740 <tr> 2741 <td> 2742 <center><a name="size"></a> <font size="-1">size</font></center> 2743 </td> 2744 <td><font size="-1"><a href="../Magick++/Geometry.html">Geometry</a> </font></td> 2745 <td><font size="-1">void</font></td> 2746 <td><font size="-1">const <a href="../Magick++/Geometry.html">Geometry</a> 2747 &geometry_</font></td> 2748 <td><font size="-1">Width and height of a raw image (an image 2749 which does not support width and height information). Size may 2750 also be used to affect the image size read from a multi-resolution 2751 format (e.g. Photo CD, JBIG, or JPEG.</font></td> 2752 </tr> 2753 <tr> 2754 <td style="text-align: center;"> 2755 <center><a name="strip"></a> <font size="-1">strip</font></center> 2756 </td> 2757 <td><font size="-1">void</font></td> 2758 <td><font size="-1">strips an image of all profiles and comments.</font></td> 2759 </tr> 2760 <tr> 2761 <td> 2762 <center><a name="strokeAntiAlias"></a> <font size="-1">strokeAntiAlias</font></center> 2763 </td> 2764 <td><font size="-1">bool</font></td> 2765 <td><font size="-1">void</font></td> 2766 <td><font size="-1">bool flag_</font></td> 2767 <td><font size="-1">Enable or disable anti-aliasing when drawing 2768 object outlines.</font></td> 2769 </tr> 2770 <tr> 2771 <td> 2772 <center><a name="strokeColor"></a> <font size="-1">strokeColor</font></center> 2773 </td> 2774 <td><font size="-1">Color</font></td> 2775 <td><font size="-1">void</font></td> 2776 <td><font size="-1">const Color &strokeColor_</font></td> 2777 <td><font size="-1">Color to use when drawing object outlines</font></td> 2778 </tr> 2779 <tr> 2780 <td> 2781 <center><a name="strokeDashOffset"></a> <font size="-1">strokeDashOffset</font></center> 2782 </td> 2783 <td><font size="-1">size_t</font></td> 2784 <td><font size="-1">void</font></td> 2785 <td><font size="-1">double strokeDashOffset_</font></td> 2786 <td><font size="-1">While drawing using a dash pattern, specify 2787 distance into the dash pattern to start the dash (default 0).</font></td> 2788 </tr> 2789 <tr> 2790 <td> 2791 <center><a name="strokeDashArray"></a> <font size="-1">strokeDashArray</font></center> 2792 </td> 2793 <td><font size="-1">const double*</font></td> 2794 <td><font size="-1">void</font></td> 2795 <td><font size="-1">const double* strokeDashArray_</font></td> 2796 <td><font size="-1">Specify the pattern of dashes and gaps used 2797 to stroke paths. The strokeDashArray represents a zero-terminated 2798 array of numbers that specify the lengths (in pixels) of alternating 2799 dashes and gaps in user units. If an odd number of values is provided, 2800 then the list of values is repeated to yield an even number of 2801 values. A typical strokeDashArray_ array might contain the 2802 members 5 3 2 0, where the zero value indicates the end of the pattern 2803 array.</font></td> 2804 </tr> 2805 <tr> 2806 <td> 2807 <center><a name="strokeLineCap"></a> <font size="-1">strokeLineCap</font></center> 2808 </td> 2809 <td><font size="-1">LineCap</font></td> 2810 <td><font size="-1">void</font></td> 2811 <td><font size="-1">LineCap lineCap_</font></td> 2812 <td><font size="-1">Specify the shape to be used at the corners 2813 of paths (or other vector shapes) when they are stroked. Values of 2814 LineJoin are UndefinedJoin, MiterJoin, RoundJoin, and BevelJoin.</font></td> 2815 </tr> 2816 <tr> 2817 <td> 2818 <center><a name="strokeLineJoin"></a> <font size="-1">strokeLineJoin</font></center> 2819 </td> 2820 <td><font size="-1">LineJoin</font></td> 2821 <td><font size="-1">void</font></td> 2822 <td><font size="-1">LineJoin lineJoin_</font></td> 2823 <td><font size="-1">Specify the shape to be used at the corners 2824 of paths (or other vector shapes) when they are stroked. Values of 2825 LineJoin are UndefinedJoin, MiterJoin, RoundJoin, and BevelJoin.</font></td> 2826 </tr> 2827 <tr> 2828 <td> 2829 <center><a name="strokeMiterLimit"></a> <font size="-1">strokeMiterLimit</font></center> 2830 </td> 2831 <td><font size="-1">size_t</font></td> 2832 <td><font size="-1">void</font></td> 2833 <td><font size="-1">size_t miterLimit_</font></td> 2834 <td><font size="-1">Specify miter limit. When two line segments 2835 meet at a sharp angle and miter joins have been specified for 2836 'lineJoin', it is possible for the miter to extend far beyond the 2837 thickness of the line stroking the path. The miterLimit' imposes a 2838 limit on the ratio of the miter length to the 'lineWidth'. The default 2839 value of this parameter is 4.</font></td> 2840 </tr> 2841 <tr> 2842 <td> 2843 <center><a name="strokeWidth"></a> <font size="-1">strokeWidth</font></center> 2844 </td> 2845 <td><font size="-1">double</font></td> 2846 <td><font size="-1">void</font></td> 2847 <td><font size="-1">double strokeWidth_</font></td> 2848 <td><font size="-1">Stroke width for use when drawing vector 2849 objects (default one)</font></td> 2850 </tr> 2851 <tr> 2852 <td> 2853 <center><a name="strokePattern"></a> <font size="-1">strokePattern</font></center> 2854 </td> 2855 <td><font size="-1">Image</font></td> 2856 <td><font size="-1">void</font></td> 2857 <td><font size="-1">const Image &strokePattern_</font></td> 2858 <td><font size="-1">Pattern image to use while drawing object 2859 stroke (outlines).</font></td> 2860 </tr> 2861 <tr> 2862 <td> 2863 <center><a name="subImage"></a> <font size="-1">subImage</font></center> 2864 </td> 2865 <td><font size="-1">size_t</font></td> 2866 <td><font size="-1">void</font></td> 2867 <td><font size="-1">size_t subImage_</font></td> 2868 <td><font size="-1">Subimage of an image sequence</font></td> 2869 </tr> 2870 <tr> 2871 <td> 2872 <center><a name="subRange"></a> <font size="-1">subRange</font></center> 2873 </td> 2874 <td><font size="-1">size_t</font></td> 2875 <td><font size="-1">void</font></td> 2876 <td><font size="-1">size_t subRange_</font></td> 2877 <td><font size="-1">Number of images relative to the base image</font></td> 2878 </tr> 2879 <tr> 2880 <td valign="middle"> 2881 <div align="center"><a name="textEncoding"></a> <small>textEncoding</small><br> 2882 </div> 2883 </td> 2884 <td valign="middle"><small>string</small><small><br> 2885 </small></td> 2886 <td valign="middle"><small>void</small><small><br> 2887 </small></td> 2888 <td valign="middle"><small>const std::string &encoding_</small><small><br> 2889 </small></td> 2890 <td valign="top"><small>Specify the code set to use for text 2891 annotations. The only character encoding which may be specified at 2892 this time is "UTF-8" for representing </small><small><a 2893 href="http://www.unicode.org/"> Unicode </a> </small><small>as a 2894 sequence of bytes. Specify an empty string to use the default ASCII 2895 encoding. Successful text annotation using Unicode may require fonts 2896 designed to support Unicode.</small><br> 2897 </td> 2898 </tr> 2899 <tr> 2900 <td> 2901 <center><a name="tileName"></a> <font size="-1">tileName</font></center> 2902 </td> 2903 <td><font size="-1">string</font></td> 2904 <td><font size="-1">void</font></td> 2905 <td><font size="-1">const string &tileName_</font></td> 2906 <td><font size="-1">Tile name</font></td> 2907 </tr> 2908 <tr> 2909 <td> 2910 <center><a name="totalColors"></a> <font size="-1">totalColors</font></center> 2911 </td> 2912 <td><font size="-1">size_t</font></td> 2913 <td><font size="-1">void</font></td> 2914 <td bgcolor="#666666"><font size="-1"> </font></td> 2915 <td><font size="-1">Number of colors in the image</font></td> 2916 </tr> 2917 <tr> 2918 <td> 2919 <center><a name="type"></a> <font size="-1">type</font></center> 2920 </td> 2921 <td><font size="-1"><a href="../Magick++/Enumerations.html#ImageType">ImageType</a> 2922 </font></td> 2923 <td><font size="-1">void</font></td> 2924 <td bgcolor="#ffffff"><font size="-1"><a 2925 href="../Magick++/Enumerations.html#ImageType"> ImageType</a> </font></td> 2926 <td><font size="-1">Image type.</font></td> 2927 </tr> 2928 <tr> 2929 <td> 2930 <center><a name="verbose"></a> <font size="-1">verbose</font></center> 2931 </td> 2932 <td><font size="-1">bool</font></td> 2933 <td><font size="-1">void</font></td> 2934 <td><font size="-1">bool verboseFlag_</font></td> 2935 <td><font size="-1">Print detailed information about the image</font></td> 2936 </tr> 2937 <tr> 2938 <td> 2939 <center><a name="view"></a> <font size="-1">view</font></center> 2940 </td> 2941 <td><font size="-1">string</font></td> 2942 <td><font size="-1">void</font></td> 2943 <td><font size="-1">const string &view_</font></td> 2944 <td><font size="-1">FlashPix viewing parameters.</font></td> 2945 </tr> 2946 <tr> 2947 <td> 2948 <center><a name="virtualPixelMethod"></a> <font size="-1">virtualPixelMethod</font></center> 2949 </td> 2950 <td><font size="-1"><a href="../Magick++/Enumerations.html#VirtualPixelMethod">VirtualPixelMethod</a> 2951 </font></td> 2952 <td><small><font size="-1"><small>void</small></font></small></td> 2953 <td><small><font size="-1"><small><a 2954 href="../Magick++/Enumerations.html#VirtualPixelMethod">VirtualPixelMethod</a> 2955 virtualPixelMethod_</small></font></small></td> 2956 <td><font size="-1">Image virtual pixel method.</font></td> 2957 </tr> 2958 <tr> 2959 <td> 2960 <center><a name="x11Display"></a> <font size="-1">x11Display</font></center> 2961 </td> 2962 <td><font size="-1">string (e.g. "hostname:0.0")</font></td> 2963 <td><font size="-1">void</font></td> 2964 <td><font size="-1">const string &display_</font></td> 2965 <td><font size="-1">X11 display to display to, obtain fonts from, 2966 or to capture image from</font></td> 2967 </tr> 2968 <tr> 2969 <td> 2970 <center><a name="xResolution"></a> <font size="-1">xResolution</font></center> 2971 </td> 2972 <td><font size="-1">double</font></td> 2973 <td><font size="-1">void</font></td> 2974 <td bgcolor="#666666"><font size="-1"> </font></td> 2975 <td><font size="-1">x resolution of the image</font></td> 2976 </tr> 2977 <tr> 2978 <td> 2979 <center><a name="yResolution"></a> <font size="-1">yResolution</font></center> 2980 </td> 2981 <td><font size="-1">double</font></td> 2982 <td><font size="-1">void</font></td> 2983 <td bgcolor="#666666"><font size="-1"> </font></td> 2984 <td><font size="-1">y resolution of the image</font></td> 2985 </tr> 2986 </tbody> 2987 </table></ul> 2988 </div> 2989 <h2> <a name="Raw Image Pixel Access"></a> Low-Level Image Pixel Access</h2> 2990 <div class="doc-section"> 2991 Image pixels (of type <i><a href="../Magick++/PixelPacket.html">PixelPacket</a> </i>) 2992 may be accessed directly via the <i>Image Pixel Cache</i> . The 2993 image pixel cache is a rectangular window into the actual image pixels 2994 (which may be in memory, memory-mapped from a disk file, or entirely on 2995 disk). Two interfaces exist to access the <i>Image Pixel Cache.</i> 2996 The 2997 interface described here (part of the <i>Image</i> class) supports 2998 only 2999 one view at a time. See the <i><a href="../Magick++/Pixels.html">Pixels</a> </i> 3000 class for a more abstract interface which supports simultaneous pixel 3001 views (up to the number of rows). As an analogy, the interface 3002 described 3003 here relates to the <i><a href="../Magick++/Pixels.html">Pixels</a> </i> class as 3004 stdio's gets() relates to fgets(). The <i><a href="../Magick++/Pixels.html"> Pixels</a> 3005 </i>class provides the more general form of the interface. 3006 <p>Obtain existing image pixels via <i>getPixels()</i>. Create a new 3007 pixel region using <i>setPixels().</i></p> 3008 <p>In order to ensure that only the current generation of the image is 3009 modified, the Image's <a href="Image++.html#modifyImage">modifyImage()</a> method 3010 should be invoked to reduce the reference count on the underlying image 3011 to one. If this is not done, then it is possible for a previous 3012 generation of the image to be modified due to the use of reference 3013 counting when copying or constructing an Image.<br> 3014 </p> 3015 <p>Depending on the capabilities of the operating system, and the 3016 relationship of the window to the image, the pixel cache may be a copy 3017 of the pixels in the selected window, or it may be the actual image 3018 pixels. In any case calling <i>syncPixels()</i> insures that the base 3019 image is updated with the contents of the modified pixel cache. The 3020 method <i> readPixels()</i> supports copying foreign pixel data 3021 formats 3022 into the pixel cache according to the <i>QuantumTypes</i>. The method <i>writePixels()</i> 3023 supports copying the pixels in the cache to a foreign pixel 3024 representation according to the format specified by <i>QuantumTypes</i>.</p> 3025 <p>The pixel region is effectively a small image in which the pixels 3026 may be accessed, addressed, and updated, as shown in the following 3027 example: 3028 <pre class="code"> 3029 <p><img class="icon" src="http://www.imagemagick.org/api/Cache.png" name="Graphic1" width="254" border="0"></p> 3030 Image image("cow.png"); 3031 // Ensure that there are no other references to this image. 3032 image.modifyImage(); 3033 // Set the image type to TrueColor DirectClass representation. 3034 image.type(TrueColorType); 3035 // Request pixel region with size 60x40, and top origin at 20x30 3036 ssize_t columns = 60; 3037 PixelPacket *pixel_cache = image.getPixels(20,30,columns,40); 3038 // Set pixel at column 5, and row 10 in the pixel cache to red. 3039 ssize_t column = 5; 3040 ssize_t row = 10; 3041 PixelPacket *pixel = pixel_cache+row*columns+column; 3042 *pixel = Color("red"); 3043 // Save changes to underlying image . 3044 image.syncPixels(); 3045 // Save updated image to file. 3046 image.write("horse.png"); 3047 </pre> 3048 </p> 3049 <p>The image cache supports the following methods: <br> 3050 3051 <ul><table border="1" width="100%"> 3052 <caption>Image Cache Methods</caption> <tbody> 3053 <tr> 3054 <td> 3055 <center><b>Method</b></center> 3056 </td> 3057 <td> 3058 <center><b>Returns</b></center> 3059 </td> 3060 <td> 3061 <center><b>Signature</b></center> 3062 </td> 3063 <td> 3064 <center><b>Description</b></center> 3065 </td> 3066 </tr> 3067 <tr> 3068 <td> 3069 <center><a name="getConstPixels"></a> <font size="-1">getConstPixels</font></center> 3070 </td> 3071 <td><font size="-1">const <a href="../Magick++/PixelPacket.html">PixelPacket</a> 3072 *</font></td> 3073 <td><font size="-1">const ssize_t x_, const ssize_t y_, const size_t 3074 columns_, const size_t rows_</font></td> 3075 <td><font size="-1">Transfers pixels from the image to the pixel 3076 cache as defined by the specified rectangular region. </font><font 3077 size="-1">The returned pointer remains valid until the next getPixel, 3078 getConstPixels, or setPixels call and should never be deallocated by 3079 the 3080 user.</font></td> 3081 </tr> 3082 <tr> 3083 <td> 3084 <center><a name="getConstIndexes"></a> <font size="-1">getConstIndexes</font></center> 3085 </td> 3086 <td><font size="-1">const IndexPacket*</font></td> 3087 <td><font size="-1">void</font></td> 3088 <td><font size="-1">Returns a pointer to the Image pixel indexes 3089 corresponding to a previous </font><font size="-1">getPixel, 3090 getConstPixels, or setPixels call. </font><font size="-1">The 3091 returned pointer remains valid until the next getPixel, getConstPixels, 3092 or setPixels call and should never be deallocated by the user.</font><font 3093 size="-1"> Only valid for PseudoClass images or CMYKA images. The 3094 pixel indexes represent an array of type IndexPacket, with each entry 3095 corresponding to an x,y pixel position. For PseudoClass images, the 3096 entry's value is the offset into the colormap (see <a href="Image++.html#colorMap">colorMap</a> 3097 ) for that pixel. For CMYKA images, the indexes are used to contain the 3098 alpha channel.</font></td> 3099 </tr> 3100 <tr> 3101 <td> 3102 <center><a name="getIndexes"></a> <font size="-1">getIndexes</font></center> 3103 </td> 3104 <td><font size="-1">IndexPacket*</font></td> 3105 <td><font size="-1">void</font></td> 3106 <td><font size="-1">Returns a pointer to the Image pixel indexes 3107 corresponding to the pixel region requested by the last <a 3108 href="Image++.html#getConstPixels">getConstPixels</a> , <a href="Image++.html#getPixels">getPixels</a> 3109 , or <a href="Image++.html#setPixels">setPixels</a> call. </font><font 3110 size="-1">The 3111 returned pointer remains valid until the next getPixel, getConstPixels, 3112 or setPixels call and should never be deallocated by the user.</font><font 3113 size="-1"> </font><font size="-1">Only valid for PseudoClass images 3114 or 3115 CMYKA images. The pixel indexes represent an array of type 3116 IndexPacket, with each entry corresponding to a pixel x,y position. For 3117 PseudoClass images, the entry's value is the offset into the colormap 3118 (see <a href="Image++.html#colorMap">colorMap</a> ) for that pixel. For 3119 CMYKA 3120 images, the indexes are used to contain the alpha channel.</font></td> 3121 </tr> 3122 <tr> 3123 <td> 3124 <center><a name="getPixels"></a> <font size="-1">getPixels</font></center> 3125 </td> 3126 <td><font size="-1"><a href="../Magick++/PixelPacket.html">PixelPacket</a> *</font></td> 3127 <td><font size="-1">const ssize_t x_, const ssize_t y_, const size_t 3128 columns_, const size_t rows_</font></td> 3129 <td><font size="-1">Transfers pixels from the image to the pixel 3130 cache as defined by the specified rectangular region. Modified pixels 3131 may be subsequently transferred back to the image via syncPixels. </font><font 3132 size="-1">The returned pointer remains valid until the next getPixel, 3133 getConstPixels, or setPixels call and should never be deallocated by 3134 the 3135 user.</font><font size="-1"></font></td> 3136 </tr> 3137 <tr> 3138 <td> 3139 <center><a name="setPixels"></a> <font size="-1">setPixels</font></center> 3140 </td> 3141 <td><font size="-1"><a href="../Magick++/PixelPacket.html">PixelPacket</a> *</font></td> 3142 <td><font size="-1">const ssize_t x_, const ssize_t y_, const size_t 3143 columns_, const size_t rows_</font></td> 3144 <td><font size="-1">Allocates a pixel cache region to store image 3145 pixels as defined by the region rectangle. This area is 3146 subsequently transferred from the pixel cache to the image via 3147 syncPixels. </font><font size="-1">The returned pointer remains 3148 valid until the next getPixel, getConstPixels, or setPixels call and 3149 should never be deallocated by the user.</font></td> 3150 </tr> 3151 <tr> 3152 <td> 3153 <center><a name="syncPixels"></a> <font size="-1">syncPixels</font></center> 3154 </td> 3155 <td><font size="-1">void</font></td> 3156 <td><font size="-1">void</font></td> 3157 <td><font size="-1">Transfers the image cache pixels to the image.</font></td> 3158 </tr> 3159 <tr> 3160 <td> 3161 <center><a name="readPixels"></a> <font size="-1">readPixels</font></center> 3162 </td> 3163 <td><font size="-1">void</font></td> 3164 <td><font size="-1"><a href="../Magick++/Enumerations.html#QuantumTypes">QuantumTypes</a> 3165 quantum_, unsigned char *source_,</font></td> 3166 <td><font size="-1">Transfers one or more pixel components from a 3167 buffer or file into the image pixel cache of an image. ReadPixels is 3168 typically used to support image decoders. The region transferred 3169 corresponds to the region set by a preceding setPixels call.</font></td> 3170 </tr> 3171 <tr> 3172 <td> 3173 <center><a name="writePixels"></a> <font size="-1">writePixels</font></center> 3174 </td> 3175 <td><font size="-1">void</font></td> 3176 <td><font size="-1"><a href="../Magick++/Enumerations.html#QuantumTypes">QuantumTypes</a> 3177 quantum_, unsigned char *destination_</font></td> 3178 <td><font size="-1">Transfers one or more pixel components from 3179 the image pixel cache to a buffer or file. WritePixels is typically 3180 used to support image encoders. The region transferred corresponds to 3181 the region set by a preceding getPixels or getConstPixels call.</font></td> 3182 </tr> 3183 </tbody> 3184 </table></ul> 3185 </p> 3186 </div> 3187 </div> 3188 <footer class="magick-footer"> 3189 <p><a href="../support.html">Donate</a> 3190 <a href="../sitemap.html">Sitemap</a> 3191 <a href="../links.html">Related</a> 3192 <a href="../architecture.html">Architecture</a> 3193 </p> 3194 <p><a href="Image++.html#">Back to top</a> 3195 <a href="http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x89AB63D48277377A">Public Key</a> 3196 <a href="http://www.imagemagick.org/script/contact.php">Contact Us</a></p> 3197 <p><small> 1999-2016 ImageMagick Studio LLC</small></p> 3198 </footer> 3199 </div><!-- /.container --> 3200 3201 <script src="https://localhost/ajax/libs/jquery/1.11.3/jquery.min.js"></script> 3202 <script src="../js/magick.html"></script> 3203 </div> 3204 </body> 3205 </html> 3206
